INTERNATIONAL JOURNAL OF RESEARCH AND INNOVATION IN SOCIAL SCIENCE (IJRISS)  
ISSN No. 2454-6186 | DOI: 10.47772/IJRISS | Volume IX Issue XI November 2025  
How Flexibility-Oriented HRM Systems Foster Innovation : The Key  
Role of Absorptive Capacity  
Nour Ben Guedria1, Lassaad Lakhaal2  
1Department of Management, LAMIDED, ISG sousse, University of Sousse, Sousse, Tunisia  
2Department of Management, FFSEGSO, LAMIDED, University of Sousse, Sousse, Tunisia  
Received: 28 November 2025; Accepted: 04 December 2025; Published: 11 December 2025  
ABSTRACT  
Flexibility has long been recognized as a key characteristic of effective HRM systems, yet empirical evidence  
regarding its outcomesparticularly in relation to innovationremains limited. Drawing on dynamic  
capabilities theory, this study develops and tests a model examining the impact of flexibility-oriented HRM  
(FHRM) systems on firms’ innovation performance through absorptive capacity. The empirical analysis is based  
on data collected from 210 managers of SMEs operating in the electrical and mechanical industries in Tunisia.  
The findings highlight distinct effects of FHRM on the two dimensions of absorptive capacitypotential and  
realized AC. Moreover, the results show that absorptive capacity partially mediates the relationship between  
flexibility-oriented HRM systems and innovation performance. These findings extend theoretical understanding  
of HRM as an organizational antecedent of absorptive capacity and underline its strategic role in shaping  
innovation outcomes. The paper concludes with a discussion of theoretical and managerial implications, as well  
as limitations and directions for future research.  
Keywords : Flexibility-oriented HRM system, Potential absorptive capacity, Realized Absorptive capacity,  
Performance innovation.  
How flexibility-oriented HRM systems foster innovation : the key role of absorptive capacity  
INTRODUCTION  
Firms today operate in an exceptionally turbulent environment characterized by intense competition and rapid  
technological change (Teece, 2007; Chang et al., 2013; Distel, 2019; Angel Martínez-Sánchez et al., 2020). In  
response to this dynamic context, they must innovate to ensure their survival and maintain their competitive  
advantages (Liao et al., 2018; Distel, 2019). Within this perspective, several studies highlight the central role  
played by external knowledge sources in fostering innovation and sustaining a durable competitive advantage  
(Grant, 1996; Lichtenthaler, 2009; Distel, 2019; Lau & Lo, 2019; Elidjen et al., 2025).  
To be innovative, firms must have trained employees capable of adapting to environmental changes, as well as  
continuously updated knowledge portfolios derived from internal R&D or external sources. Absorptive capacity  
(AC) thus emerges as a critical element: it enables the identification, assimilation, transformation, and  
exploitation of valuable external knowledge, thereby enhancing product innovation and, more broadly,  
organizational performance (Elidjen et al., 2025; Alok Kumar Singh et al., 2023). Cohen and Levinthal (1990)  
clearly asserted that a firm’s innovation performance depends on its absorptive capacity. They define it as “the  
ability to recognize the value of new information, assimilate it, and apply it to commercial ends.” Absorptive  
capacity therefore represents a key mechanism through which firms can fully benefit from external knowledge  
opportunities and strengthen their innovation potential. Cohen and Levinthal (1990) were also explicit in stating  
that organizational mechanismssuch as human resource practicesare important determinants of absorptive  
capacity (Jansen et al., 2005; Chang et al., 2013; Distel, 2019). Indeed, human resource (HR) practices constitute  
an effective lever not only to enhance the acquisition and use of knowledge within the firm but also to develop  
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ISSN No. 2454-6186 | DOI: 10.47772/IJRISS | Volume IX Issue XI November 2025  
organizational learning capacity (Lado & Wilson, 1994) and to generate competitive advantage (Lado & Wilson,  
1994; Daghfous, 2004).  
At the same time, HRM research has often examined the effect of individual HR practices on firm performance.  
However, studying HR systemscoherent sets of mutually reinforcing HR practicesis likely to provide  
stronger support for performance outcomes than investigating practices individually (Kehoe & Wright, 2013;  
Ben Guedria et al., 2025). These systems strengthen employees’ abilities and motivation and contribute  
significantly to absorptive capacity (Roy, 2018; Ben Guedria et al., 2025). In the existing literature, there remains  
limited understanding of how HR systems influence innovation performance and of the role of absorptive  
capacity in this relationship (Soo et al., 2017). Martínez-Sánchez et al. (2021) emphasized that firms must be  
sufficiently flexible and innovative to remain competitive. They highlight that flexibility and innovation should  
be central topics in labor relations, particularly in industries such as the automotive sector. HR flexibility  
provides employees with the skills necessary to improve operations and integrate new knowledge, while  
absorptive capacity helps firms remain technologically up-to-date and responsive to market changes. However,  
the literature has devoted limited attention to the relationship between HR flexibility and absorptive capacity  
(Chang et al., 2013; Ben Guedria et al., 2025; Soo et al., 2017; Martínez-Sánchez et al., 2021).  
In this study, we focus on flexibility-oriented HRM (FOHRM) as an HRM system that enables firms to cope  
with environmental instability by enhancing organizational flexibility (Chang et al., 2013). Chang et al. define  
FOHRM as “a set of internally consistent HR practices that enable a firm to acquire and develop human resources  
for a wide range of alternative uses and to redeploy these resources quickly and efficiently” (Chang et al., 2013,  
p.  
1928).  
These  
authors  
identify  
two  
subsystems  
within  
FOHRM.  
The resource-flexibility-oriented HRM subsystem (RFOHRM) refers to HR practices that allow a firm to  
acquire and develop human resources for multiple alternative uses (e.g., extensive training beyond basic job  
requirements, job rotation). This subsystem facilitates the development of flexible human resources (Wright &  
Snell, 1998).  
The coordination-flexibility-oriented HRM subsystem (CFOHRM) refers to HR practices that collectively  
enable the rapid and efficient redeployment of human resources (e.g., participative management, group-based  
compensation and performance evaluation). This subsystem facilitates the swift redeployment of human  
resources (Wright & Snell, 1998). Chang et al. (2013) demonstrated how FOHRM can foster the development  
of absorptive capacity. However, they did not specifically examine potential and realized absorptive capacity as  
mediating mechanisms linking FOHRM to firms’ innovation performance (Soo et al., 2017).  
This research seeks to address this gap by examining the effect of FOHRM on innovation performance as well  
as the mediating role of potential and realized absorptive capacity. It is particularly relevant to study these sub-  
dimensions given that the literature reports different outcomes regarding the distinct roles of potential and  
realized absorptive capacity. Drawing on prior research, we make three major contributions to the understanding  
of absorptive capacity in the development of firms’ innovation performance. First, we contribute to the  
absorptive capacity literature by identifying flexibility-oriented HRM as a key organizational antecedent.  
Second, we help address the theoretical limitation of studying HR practices in isolation. Third, we extend  
existing knowledge on the impact of HR systems on organizational outcomes (innovation performance).  
Furthermore, our study enhances understanding of the role of absorptive capacity as the mechanism through  
which FOHRM contributes to firms’ innovation performance—one of the central contributions of this research.  
Building on existing literature, this study seeks to fill this gap by addressing the following research questions:  
1. 1.1 Does flexibility-oriented HRM influence potential absorptive capacity?  
1.2 Does flexibility-oriented HRM influence realized absorptive capacity?  
2. 2.1 Does potential absorptive capacity enhance innovation performance?  
2.2 Does realized absorptive capacity enhance innovation performance?  
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ISSN No. 2454-6186 | DOI: 10.47772/IJRISS | Volume IX Issue XI November 2025  
3. Does absorptive capacity strengthen the relationship between FOHRM and innovation  
performance?  
To answer these questions, we conducted a quantitative survey using a questionnaire measuring our variables  
among 210 managers in Tunisian firms operating in the electronics and electrical sectors. The collected data  
were analyzed using the structural equation modeling (SEM) method.  
To provide answers to our research questions, the remainder of this paper is structured as follows: the first section  
presents the theoretical framework and hypotheses. The second section describes the empirical methodology.  
The third section presents the main findings of the empirical study. Finally, we discuss the results.  
Theoretical Foundation and Hypotheses Development  
The resource-based view of the firm (RBV) and the dynamic capabilities perspective are frequently mobilized  
organizational theories supporting innovation research. Absorptive capacity is considered a central and essential  
component of a firm’s innovation capability and performance (Cohen & Levinthal, 1989, 1990, 1994; Zahra &  
George, 2002; Chang et al., 2013; Distel, 2019; Elidjen et al., 2025). This concept has attracted considerable  
scholarly attention, prompting several attempts at reconceptualization (e.g., Zahra & George, 2002; Todorova &  
Durisin, 2007). The most widely adopted reconceptualization is that proposed by Zahra and George (2002),  
which is theoretically grounded and empirically validated by numerous studies (Daspit & D’Souza, 2013). Zahra  
and George (2002) highlight two key sub-dimensions: potential absorptive capacity (PACAP), comprising  
acquisition and assimilation, and realized absorptive capacity (RACAP), comprising transformation and  
exploitation.  
Despite its prominence in the literature, several authors argue that understanding the factors that trigger and  
enable successful absorptive capacity development remains an important area for further inquiry (Volberda et  
al., 2010; Chang et al., 2013; Soo et al., 2017; Distel, 2019; Ben Guedria et al., 2025).  
Researchers in strategic human resource management (SHRM) have adopted the RBV logic to suggest that HR  
practices can cultivate the highest levels of valuable and rare organizational capabilities (Park et al., 2019). HR  
practices can indeed enhance innovation performance through their influence on the firm’s ability to acquire,  
assimilate, redeploy, or reconfigure new and existing knowledge and resources (Foss & Minbaeva, 2009;  
Minbaeva, 2005; Minbaeva et al., 2003). Studies examining the relationship between specific individual HR  
practices and absorptive capacity have yielded promising results (Jansen et al., 2005). However, most research  
has focused on individual HR practices and their impact on knowledge creation, sharing, and transfer, rather  
than on HR systems.  
Chang et al. (2013) advanced our understanding by examining how flexibility-oriented HRM systems (FOHRM)  
contribute to the development of absorptive capacity. Their study provided valuable insights into how FOHRM  
enhances absorptive capacity within firms. Nevertheless, the authors did not directly investigate absorptive  
capacity as a mediating mechanism linking FOHRM to firms’ innovation performance (Soo et al., 2017).  
Liao et al. (2019) demonstrated that high-commitment work systems (HCWS) act as an antecedent of a firm’s  
absorptive capacity and strengthen the positive relationship between absorptive capacity and new product and  
service performance. They also showed that realized absorptive capacity partially mediates the relationship  
between potential absorptive capacity and new product and service performance. However, these authors did not  
distinguish the separate roles of these sub-dimensions in shaping innovation performance.  
Flexibility-Oriented HRM System and Absorptive Capacity  
Flexibility-Oriented HRM System and Potential Absorptive Capacity  
Numerous scholars have examined the antecedents of potential absorptive capacity (PAC), which refers to  
knowledge acquisition and assimilation. Chang et al. (2013) define the resource flexibilityoriented HRM  
subsystem (RFHRM) as a set of practices that enable firms to acquire and develop versatile human resources.  
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This subsystem broadens employees’ expertise, thereby enhancing their ability to search for external knowledge,  
scan the environment, and engage in exploratory learning. Employees with broader expertise are able to conduct  
more effective analyses and obtain more comprehensive and reliable knowledge (Gong, 2003; Huber, 1991).  
The findings of Chang et al. (2013) show that RFHRM practicessuch as recruitment, diversified training, and  
job rotationstrengthen PAC. For instance, training helps expand employees’ knowledge bases (Nekka & Aribi,  
2017). Chang et al. (2013) further argue that job rotation, multi-skill training, polyvalent recruitment, and well-  
designed jobs collectively constitute RFHRM, which enhances employees’ ability to identify and assimilate new  
knowledge.  
The coordination flexibilityoriented HRM subsystem (CFHRM) facilitates the redeployment and  
reconfiguration of a firm’s existing knowledge repertoire. Such redeployment can influence potential absorptive  
capacity, and several arguments support this claim. First, the combination of existing knowledge from different  
functions often leads not only to new information but also to new understanding (Huber, 1991). Second, when  
employees are encouraged to share and transfer knowledge through CFHRM practices (e.g., compensation and  
performance management practices, employee suggestion systems), synergistic effects emerge. Moreover,  
through communication, employees pool their information and knowledge, thereby enriching the organization’s  
overall knowledge base (Nonaka, 2007). Enhancing the stock of knowledge enables the firm to better understand  
and assimilate new external knowledge.  
Overall, these findings demonstrate a link between the flexibilityoriented HRM system and potential absorptive  
capacity. This leads us to formulate the following hypothesis:  
H1a: The flexibility-oriented HRM system has a direct and positive effect on potential absorptive capacity.  
Flexibility-Oriented HRM System and Realized Absorptive Capacity  
Zahra and George (2002) emphasized that “potential absorptive capacity captures… the ability to value and  
acquire external knowledge, but does not guarantee the exploitation of that knowledge” (p. 190). Similarly,  
Jansen et al. (2005) found that realized absorptive capacity relies on a set of firm-level antecedents different  
from those influencing potential absorptive capacity. Organizational activities that foster strong social norms  
and trustsuch as socialization tacticsfacilitate the internal transformation of knowledge and thereby enhance  
realized absorptive capacity (Jansen et al., 2005). Firms often fail not because they lack employees capable of  
acquiring or assimilating new knowledge, but because they are unable to integrate this knowledge with existing  
knowledge and apply it effectively. Likewise, Lichtenthaler (2009) argues that firms require greater prior  
knowledge to successfully develop their realized absorptive capacity.  
Chang et al. (2013) reported that resource-flexibilityoriented HRM practices do not directly contribute to the  
development of realized absorptive capacity. In contrast, Ben Guedria et al. (2025) found contradictory results,  
which may be attributed to differences in industry and contextual factors.Knowledge sharing is considered the  
main mechanism through which realized absorptive capacity is formed (Jansen et al., 2005; Zahra & George,  
2002; Chang, 2013). Existing evidence highlights that HRM practices reinforcing coordination flexibilitysuch  
as group-based compensation, the use of information systems, organization-based rewards, and performance  
evaluation based on coordinationare precisely those practices that facilitate information flow and encourage  
knowledge sharing within organizations. Taken together, these practices are likely to support firms in rapidly  
recombining their existing knowledge and employee skills (Chang et al., 2013). Such practices enhance the  
integration and implementation of new knowledge, thereby increasing the likelihood of improving realized  
absorptive capacity through internal reconfiguration.  
The CFHRM subsystem may thus have a direct impact on realized absorptive capacity for several reasons. First,  
by redeploying and reconfiguring existing human resources, CFHRM facilitates the alignment of employees’  
knowledge with newly acquired and assimilated external knowledge. Second, CFHRM increases opportunities  
for interaction among employees with diverse knowledge bases, thereby supporting the integration and  
combination of newly acquired knowledge. For instance, to foster the internal transfer and exploitation of tacit  
and socially complex knowledge, firms must implement reward systems (a key CFHRM practice) that link  
incentives for key personnel to firm-level performance measures, thus facilitating internal knowledge transfer  
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(Lord & Ranft, 2000). Such systems cultivate shared responsibility and trust among knowledge workers, thereby  
enhancing the integration and exploitation of external knowledge into firm-specific expertise (Jansen et al.,  
2005).  
Third, the use of information systems to document employees’ knowledge and skills facilitates the storage,  
access, and use of existing organizational knowledge. This is crucial because, “due to specialization,  
differentiation, and departmentalization, organizations often do not know what they know”, and information  
storage and retrieval are core components of organizational learning (Huber, 1991, p. 106). Finally, CFHRM  
enables better utilization of employees who hold critical knowledge. Research shows that allowing such  
employees more autonomy and incorporating their suggestions is essential for preserving, transferring, and  
exploiting knowledgeparticularly in high-technology sectors (Ranft & Lord, 2000). In sum, CFHRM not only  
increases the overall knowledge base of the firm but also creates structural opportunities and motivational  
conditions that facilitate the transformation and exploitation of previously acquired and assimilated knowledge.  
Overall, these findings demonstrate a clear link between the flexibilityoriented HRM system and realized  
absorptive capacity. This leads us to formulate the following hypothesis:  
H1b: The flexibility-oriented HRM system has a direct and positive effect on realized absorptive capacity.  
Absorptive Capacity and Innovation Performance  
It is widely acknowledged in the literature that in a continuously changing environment, a firm’s innovation  
performance depends on its absorptive capacity (Distel, 2019). According to organizational learning theory, for  
organizations to innovate, they must be able to recognize the value of new external knowledge, assimilate it, and  
apply it to create value (Cohen & Levinthal, 1990; Todorova & Durisin, 2007). Numerous studies have  
confirmed the positive relationship between absorptive capacity and innovation (Tseng et al., 2011; Fosfuri &  
Tribo, 2008; Knott, 2008; Kostopoulos et al., 2011; Tsai, 2001; Soo et al., 2017). These studies support Cohen  
and Levinthal’s (1990, p. 128) assertion that “the ability to exploit external knowledge is a critical component  
of innovative capabilities.”  
Potential absorptive capacity (PACAP), represented by the acquisition and assimilation dimensions, helps firms  
access new sources of external knowledge and become aware of radical innovations that reshape industries  
(Cohen & Levinthal, 1989; Lau & Lo, 2015). Absorbed knowledge enhances strategic flexibility by enabling the  
rapid, low-cost reconfiguration and redeployment of knowledge and resources (Zahra & George, 2002; Lau &  
Lo, 2019).  
H2a : Potential absorptive capacity has a direct and positive effect on innovation performance.  
Realized absorptive capacity (RACAP) reflects a firm's ability to transform and exploit knowledge. The  
transformation dimension helps firms develop new interpretive schemas and modify existing processes (Zahra  
& George, 2002). The exploitation dimension enables firms to convert knowledge into new products (Lau & Lo,  
2019; Gao et al., 2008; Lau & Lo, 2015). Based on previous studies, we propose the following hypothesis:  
H2b : Realized absorptive capacity has a direct and positive effect on innovation performance.  
Flexibility-Oriented HRM System and Innovation Performance  
The FHRM system enables researchers to understand how firms can redesign their HR practices to support a  
broader range of employee skills and behaviors that foster organizational innovation (Chang et al., 2013;  
Lakshman et al., 2020). Chang et al. (2013) demonstrated that the CFHRM subsystem can enhance a firm’s  
innovation capability. It improves knowledge flows and facilitates the recombination of resources, which in turn  
drives innovation. Moreover, this subsystem supports the redeployment and reconfiguration of a firm’s existing  
knowledge base. Prior research has shown that the greater the stock of existing knowledge resources within a  
firm, the easier it becomes to adopt or generate new ideas (Cohen & Levinthal, 1990; Zahra & George, 2002).  
Similarly, the RFHRM subsystem helps firms acquire and develop diverse knowledge and skills. Several studies  
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have emphasized the importance of diverse knowledge and competencies in promoting innovation (Chang et al.,  
2013; Gong, 2003; Huber, 1991). Based on this literature, we propose the following hypothesis:  
H3 : The flexibility-oriented HRM system has a direct and positive effect on innovation performance.  
Absorptive Capacity as a Mediator between the Flexibility-Oriented HRM System and Innovation  
Performance  
Becker and Huselid (2006) argue that the link between HRM systems and firm performance remains a “black  
box.” The mechanisms through which flexibility-oriented HRM (FHRM) systems influence innovation  
performance remain understudied (Chang et al., 2013). Several scholars acknowledge that this relationship does  
not directly increase firm performance (Park et al., 2019). The findings of Soo et al. (2017) confirmed that  
various HR practices enhancing intellectual capital affect innovation performance through their impact on a  
firm's absorptive capacity. Chang et al. (2013) further demonstrated that an organization’s flexibility-oriented  
HRM system affects innovation performance by shaping its ability to acquire, assimilate, redeploy, or  
reconfigure new and existing knowledge and resources (Minbaeva et al., 2003; Minbaeva, 2005; Foss &  
Minbaeva, 2009). Based on these insights, we propose the following hypothesis:  
H4: The positive relationship between the flexibility-oriented HRM system and innovation performance  
is mediated by absorptive capacity.  
Figure 1 : Conceptual Framework  
METHODOLOGY  
Sample and Data Collection  
To test our research hypotheses, we conducted a quantitative study among managers working in the mechanical  
and electrical industries sector. Data were collected through a questionnaire survey. The selection of this sector  
is justified by its strategic importance within the Tunisian economy. The mechanical and electrical industries  
(MEIs), which are divided into two subsectorsthe mechanical and metallurgical industries (574 firms) and the  
electrical, electronic, and home-appliance industries (340 firms) constitute one of the main pillars of national  
manufacturing activity. This sector plays a decisive role in the country’s economic dynamics, generating more  
than 51% of the total export volume of manufacturing industries, with a value exceeding 24 billion dinars. It also  
accounts for more than 30% of industrial employment and nearly 20% of foreign investment. Moreover, official  
statistics indicate that the mechanical, electrical, and electronic industries represent the primary driver of  
Tunisian exports, contributing 46% of the country’s total exports. These elements fully justify the focus on this  
sector, whose contribution to competitiveness, innovation, and value creation lends particular relevance to the  
present study.  
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We were able to collect 210 usable responses from company directors, representing a response rate of 23.67%.  
The respondents’ profile indicates that 73% of the directors are male. The results also show that 60% of the  
surveyed directors are between 31 and 40 years old. Those aged between 20 and 30 and those between 41 and  
60 represent 15% and 25% of the sample, respectively. The majority of respondents hold either a Master’s degree  
or an engineering diploma (59%), followed by those with a bachelor’s degree or equivalent (31%).  
Variables and Scales  
To measure our constructs, we adapted scales from the existing literature. A five-point Likert scale was used,  
where 1 = strongly disagree and 5 = strongly agree. The reliability of the constructs was assessed using  
Cronbach’s alpha (α).  
Innovation Performance: To comprehensively capture the different aspects of innovation performance, we  
followed Prajogo and Ahmed (2006), who conceptualized it based on multiple criteria: the number of  
innovations, speed of innovation, level of innovation (novelty or technological novelty), and being the “first” to  
market. These four characteristics were grouped into two main dimensions of innovation: product innovation  
and process innovation. Conceptually, product innovation involves the generation of ideas or the creation of  
entirely new offerings reflected in changes to the final product, whereas process innovation represents changes  
in how firms produce final products or services, either through the adoption of innovations developed elsewhere  
or through internally developed new practices. Innovation performance is conceptualized as a second-order  
construct with two first-order constructs: product innovation and process innovation. Together, they define the  
second-order construct “innovation performance” (Cronbach’s α = 0.86, CR = 0.889).  
Absorptive Capacity: Absorptive capacity was operationalized using the four dimensions proposed by Zahra  
and George (2002). Each firm’s manager assessed absorptive capacity using the scale developed by Distel  
(2019). The first dimension, acquisition, was measured with three items, capturing the firm’s efforts to acquire  
new knowledge from external sources. The second dimension, assimilation, was also measured with three items  
and reflects the firm’s ability to analyze and understand new external information. The third dimension,  
transformation, was measured with four items and reflects the extent to which a firm can combine existing  
knowledge with new information and reinterpret existing knowledge in novel ways. Finally, the fourth  
dimension, exploitation, was measured with four items and assesses the firm’s ability to exploit new knowledge  
and apply technologies to new products. Cronbach’s alphas for acquisition, assimilation, transformation, and  
exploitation were 0.88, 0.86, 0.86, and 0.90, respectively.  
Flexibility-Oriented HRM System: We followed Chang et al. (2013), Sanchez (1995), and other relevant works  
(Stinchcombe, 1990; Volberda, 1996) that distinguish two dimensions of the FHRM system: coordination  
flexibility and resource flexibility. In this study, we adopted the measurement scales developed by Chang et al.  
(2013). The FHRM system was measured using 11 items: the first sub-dimension, RFHRM, was assessed with  
a 5-item scale, and the second sub-dimension, CFHRM, was assessed with a 6-item scale. The flexibility-oriented  
HRM system was conceptualized as a second-order construct with two first-order sub-constructs, RFHRM and  
CFHRM. Together, they define the second-order construct “flexibility-oriented HRM system” (Cronbach’s α =  
0.82; CR = 0.858).  
Control Variables: Several control variables were tested for their effects on innovation performance. These  
include firm age, as older firms may have more developed structures and organizational systems (Chang et al.,  
2013), measured as the logarithm of years of operation; and firm size, as previous research indicates that size  
impacts productivity and firm performance (Gong, Law, Chang, & Xin, 2009; Soo et al., 2017), measured as the  
logarithm of the number of employees.  
Statistical Method  
To test our hypotheses, we employed the Structural Equation Modeling (SEM) approach. SEM was preferred  
due to its ability to examine hypothetical causal relationships among structural parameters, which are often latent  
in nature. In addition, the use of this technique was justified by its capacity to address the multidimensional  
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nature of our key variables. SEM also helps identify significant relationships between variables within the model  
and determines which model provides the best fit to the data (Gkypali et al., 2018).  
ANALYSE DES RESULTATS  
Descriptive statistics  
Table 1 presents the descriptive statistics (mean and standard deviation) and the correlations among the variables  
examined in this study. It can be observed that the flexibility-oriented HRM system is positively and significantly  
correlated with absorptive capacity and with innovation performance. Firm size, which serves as a control  
variable, has a positive but non-significant effect on innovation performance. Firm age, the second control  
variable in this study, has a negative and non-significant effect on performance.  
Table1 : Correlation Matrix  
Mea  
ns  
S.E  
FHRM  
RFHRM  
CFHRM  
CA  
PCA  
RCA  
Perf.inno  
vation  
size  
Age  
FHRM  
RFHRM  
CFHRM  
CA  
3.7  
3.6  
3.7  
3.8  
3.9  
3.8  
3.6  
0.83  
0.85  
0.81  
0.82  
0.84  
0.82  
0.91  
1
0.850**  
0.820**  
0.645**  
0.660**  
0.550**  
0.588**  
1
0.605**  
0.630**  
0.635**  
0.500**  
0.500**  
1
0.660**  
0.705**  
0.755**  
0.550**  
1
PCA  
0.750**  
0.780**  
0.650**  
1
RCA  
0.623**  
0.568**  
1
Perf.inno  
vation  
0.645**  
1
size  
Age  
1.8  
0.39  
6.62  
0.056  
0.007  
0.050  
0.055  
0.052  
0.062  
0.051  
0.060  
0.055  
0.068  
0.053  
0.070  
0.142  
1
13.02  
-0.024  
0.119  
1
Correlation is significant at the 0.01 level (two-tailed).  
Reliability and Validity of the Model  
Before testing our hypotheses, we first assessed the psychometric quality of the measurement scales. First, we  
analyzed the unidimensionality of the constructs for our three latent variables using Principal Component  
Analysis (PCA). The factor loadings of the items are statistically significant, as their values exceed the acceptable  
threshold of 0.55 (Hair et al., 2010). Additionally, the Kaiser-Meyer-Olkin (KMO) index indicates whether the  
correlations among the questionnaire items are adequate, with a recommended value above 0.5. The absorptive  
capacity variable consists of 14 items. The Kaiser criterion retained 2 factors explaining 65.709% of the total  
variance. The KMO index is 0.914, and Bartlett’s test is significant at 0.000. However, the item “assimilation4”  
did not meet the minimum threshold of 0.5 and was removed, which improved the total variance explained from  
65.709% to 70.121%. The innovation performance variable consists of 9 items, explaining 70% of the total  
variance. The Kaiser criterion retained 2 factors explaining 80.3% of the variance. The KMO index is 0.912, and  
Bartlett’s test is significant at 0.000. The flexibility-oriented HRM system variable consists of 11 items. The  
Kaiser criterion retained 2 factors explaining 70.421% of the total variance. The KMO index is 0.906, and  
Bartlett’s test is significant at 0.000.  
Second, we assessed the reliability of our measures to determine whether the items accurately reflect the  
intended constructs. Reliability can be estimated using Cronbach’s alpha (Akrout, 2010). A value of α ≥ 0.70  
indicates acceptable reliability (Hair, Black, Babin, & Anderson, 2010). In our study, all Cronbach’s alpha values  
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exceed 0.70, confirming the reliability of all variables. Finally, we evaluated the construct validity through two  
types: convergent validity and discriminant validity (Campbell & Fiske, 1959). Convergent validity was assessed  
by calculating the Average Variance Extracted (AVE). Convergent validity is established when AVE ≥ 0.5  
(Fornell & Larcker, 1981). Table 1 shows that all AVEs exceed 0.5, confirming convergent validity.  
Table 2: Convergent Validity  
Construct  
AVE  
0.529  
0.583  
0.641  
FOHRM  
Absorptive capacity  
Innovation performance  
Discriminant validity was tested by comparing the square roots of AVEs with the correlations among constructs.  
According to Fornell and Larcker (1981), discriminant validity is confirmed when the square root of the AVE  
of each construct is higher than its correlations with other constructs.  
Table 3: Correlations among Constructs and Discriminant Validity  
Construct  
FGRH System  
0.728  
AC  
IP  
FOHRM  
Absorptive Capacity  
Innovation Performance  
0.688  
0.764  
0.607  
0.621  
0.801  
The results show that correlations between constructs are lower than the square roots of their respective AVEs,  
confirming discriminant validity.  
Hypotheses Testing  
We now proceed to validate the hypotheses of our study. Using AMOS 23, we first calculated the path  
coefficients. The results indicate that all the hypothesized relationships are supported. Control variables were  
included in the model, and the results show that both firm age and firm size have no significant effect on the  
dependent variable.  
Next, to analyze the mediating role of absorptive capacity in the relationship between the flexibility-oriented  
HRM system (FHRM) and innovation performance, we applied the methodological procedure proposed by  
Baron and Kenny (1986), which involves four steps through a series of regressions.  
Step 1: This step involves performing a simple regression between the independent variable and the dependent  
variable. Here, we tested the relationship between the independent variable, the FHRM system, and the  
dependent variable, innovation performance. The results indicate that FHRM has a positive and significant effect  
on innovation performance (β = 0.74; p = 0.001). The model fit is acceptable (χ² = 319.7, df = 159; NFI = 0.90;  
CFI = 0.94; RMSEA = 0.07).  
Step 2: This step involves a simple regression between the independent variable, FHRM, and the mediating  
variable, absorptive capacity (AC). The results show that FHRM positively and significantly influences AC. The  
model fit is acceptable (χ² = 494.745, df = 238; CFI = 0.92; NFI = 0.87; RMSEA = 0.07).  
Step 3: At this step, we tested the relationship between FHRM and innovation performance while including AC  
as a mediating variable. The results, presented in the table below, show that the independent variable, FHRM,  
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positively influences the mediating variable, AC (β = 0.58; p = 0.000). Additionally, AC positively affects  
innovation performance (β = 0.39; p = 0.13). The model fit indices indicate a good model fit (χ² = 977.421, df =  
532; CFI = 0.91; NFI = 0.89; RMSEA = 0.06).  
These findings allow us to conclude that absorptive capacity serves as a mediating variable in the relationship  
between the FHRM system and innovation performance.  
Tableau 4 : Effet direct (unstandardized)  
Estimate S.E. C.R.  
P
Hypothesis  
Capacité <---Flexhrm (a)  
Perfinov <--- Flexhrm (c’)  
Perfinov <--- Capacité (b)  
,081 7,233 0.001  
,120 3,089 0.002  
,158 2,478 0.013  
,586*  
,372*  
,392*  
*= p< 0.05  
Step 4: At this stage, we verify whether the mediation is full or partial. This involves testing the significance of  
the direct link between the independent variable, FHRM system, and the dependent variable. Our results show  
that this relationship is significant, indicating that absorptive capacity only partially mediates the relationship.  
In addition, we conducted the Sobel test to confirm the significance of the mediating effect. The results support  
the mediating role of absorptive capacity (Sobel test statistic = 2.346, p < 0.01).  
Despite the popularity of the Baron and Kenny (1986) approach, recent research has criticized it for its relatively  
low statistical power and for not directly testing statistical mediation or the indirect effect (a × b) (Preacher &  
Hayes, 2004). Consequently, a more modern approach proposed by Preacher and Hayes (2008) has been widely  
used in management research (e.g., Naqshbandi & Tabche, 2018). This approach quantifies the indirect effect as  
the product of coefficients a and b when directly testing mediation hypotheses. The results obtained using the  
Baron and Kenny framework were confirmed using the Preacher and Hayes (2008) approach. Specifically, we  
employed the bootstrap method (2,000 resamples) and calculated bias-corrected confidence intervals. The upper  
and lower confidence intervals did not include zero, indicating a significant indirect effect. Table 5 presents the  
results.  
Table5 : direct and indirect effect  
Bootstrap results for indirect  
effect through mediator (a _ b)  
Effet  
direct  
Effet  
indirect  
Resultat  
LB 95% CI  
UL 95% CI  
H1 : FHRM->CA  
Hypothesis supported  
Hypothesis supported  
Hypothesis supported  
0.586*  
0.392*  
0.372*  
H2 : CA->performance  
H3 : FHRM -> performance  
H4 :  
FHRM->CA->  
0.254 *  
0.056  
0.527  
Hypothesis supported –  
performance  
Partial mediation  
*=p < 0.05;  
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Robustness Analyses  
Testing for Common Method Variance Bias:  
According to Brannick et al. (2010), the presence of common method variance (CMV) bias in a given study can  
lead to incorrect inferences. For this reason, to reduce the issue of social desirability, respondents were assured  
that their answers would remain anonymous. Additionally, respondents were informed that there are no right or  
wrong answers and that they should respond as honestly as possible (Podsakoff et al., 2003). Furthermore,  
Harman's single-factor test was conducted to assess whether there is a serious CMV problem (Podsakoff,  
MacKenzie, Lee, & Podsakoff, 2003). A factor analysis was performed using the items for the three key variables  
of the present study. Our results indicate that no single factor emerges and that the first factor does not account  
for the majority of covariance among the measures. Therefore, we conclude that there are no substantial common  
method variance issues based on our current sampling strategy (Podsakoff et al., 2003).  
DISCUSSION OF RESULTS  
The objective of this research is to examine the impact of flexibility-oriented HRM systems as a key determinant  
of a firm’s absorptive capacity (AC), and to demonstrate the role of this capacity in enhancing a firm's innovation  
performance. The results of our study yield several important insights regarding absorptive capacity and its sub-  
dimensions.  
The first insight highlights the important role of HRM systems as organizational antecedents of AC (Chang et  
al., 2013; Jansen et al., 2005; Volberda et al., 2010). The findings confirm that flexibility-oriented human  
resource management systems have a positive and significant effect on the absorptive capacity of firms operating  
in the mechanical and electronic industries. These results align with prior research demonstrating a positive  
relationship between HRM systems and AC (Volberda et al., 2010; Cohen & Levinthal, 1990; Chang et al., 2013;  
Soo et al., 2017; Lewin, Massini & Peeters, 2011). This is consistent with the assertions of Cohen and Levinthal  
(1990), who explicitly argued that organizational mechanismssuch as HR practicesconstitute important  
contributing factors to absorptive capacity. It is therefore essential for firms operating in dynamic environments  
to adopt flexibility-oriented HRM systems in order to enhance their absorptive capacity. These findings offer  
several contributions to the literature.  
First, they highlight the importance of HRM systems as organizational antecedents that foster the development  
of absorptive capacity. Volberda et al. (2010) noted that several organizational antecedents of AC remain  
understudied, including reward systems and HRM systems. More specifically, our study shows that flexibility-  
oriented HRM systems exert a significant influence on both sub-dimensions of AC. Our results indicate that the  
“resource” dimension of flexibility-oriented HRM plays a more decisive role than the “coordination” dimension  
in developing potential AC, corroborating the work of Chang et al. (2013, 2020). Furthermore, both dimensions  
of flexibility-oriented HRM significantly influence potential and realized AC. Second, our study helps address  
a long-standing theoretical gap in the HRM literature, namely the tendency to examine HR practices in isolation  
(Chang et al., 2013; Kehoe & Wright, 2013; Ben Guedria et al., 2025). Coherent and mutually reinforcing HRM  
systems are more likely to support organizational performance than individual HR practices (Kehoe & Wright,  
2013). Our findings therefore support the relevance of adopting a systemic approach to HRM when analyzing  
its influence on absorptive capacity. Regarding the relationship between absorptive capacity and innovation  
performance, our findings confirm previous studies showing a positive and significant association between these  
two variables (e.g., Kostopoulos et al., 2011; Tsai, 2001). The results underscore the critical role of AC in driving  
organizational innovation. Moreover, our findings show that realized absorptive capacity has a stronger effect  
on innovation performance than potential absorptive capacity. This is consistent with prior research, as realized  
AC reflects the transformation and exploitation of newly acquired knowledgeprocesses that are directly linked  
to the generation of innovation.  
Additionally, this research not only corroborates earlier studies (Chang & Chen, 2010; Minbaeva, 2005;  
Minbaeva et al., 2003) that identified a direct relationship between HR practices and absorptive capacity, but  
also highlights that flexibility-oriented HRM systems indirectly influence innovation performance through their  
impact on AC. This finding contributes to the strategic HRM literature by demonstrating the strategic role played  
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by flexibility-oriented HRM systems in building exploration and exploitation capabilities that ultimately enhance  
innovation performance. Thus, the second major insight of this study concerns the mediating role of absorptive  
capacity in the relationship between flexibility-oriented HRM systems and innovation performance.  
CONCLUSION  
The purpose of this study was to examine the role of flexibility-oriented HRM systems as organizational  
antecedents of absorptive capacity (AC) and to illustrate their contribution to innovation performance in firms  
operating within the Tunisian chemical industry. Structural equation modeling was employed to estimate and  
test these relationships. The findings highlight the significant role of HRM systems as key organizational  
antecedents of absorptive capacity. Moreover, the results underline the mediating role of absorptive capacity in  
the relationship between HRM systems and firm innovation performance.  
Theoretical Implications  
This research advances the literature on absorptive capacity by empirically examining HRM systems as an  
important organizational antecedent of AC. First, the study responds to calls from recent research suggesting the  
need to investigate the influence of HR systems on absorptive capacity (Chang et al., 2013; Soo et al., 2017).  
These authors argue that coherent and mutually reinforcing HR practices are more likely to support sustainable  
performance outcomes than individual HR practices (Kehoe & Wright, 2013). Second, our study also answers  
calls from scholars advocating the examination of HRM practices and systems as organizational antecedents of  
AC (Volberda et al., 2010; Soo et al., 2017; Chang et al., 2013).  
Managerial Implications :  
Based on our findings, several managerial recommendations can be proposed. Managers should adopt coherent  
HRM systems and practices as a means to enhance their firm’s absorptive capacity. To generate improvements  
in innovation performancewhether through knowledge enhancement or knowledge renewalfirms should  
implement appropriate HR systems (e.g., recruitment, training, job rotation, multiskilling, skill-based selection,  
and enriched job design). Such systems increase employees’ knowledge breadth and enable them to identify,  
assimilate, and apply new and valuable knowledge.  
Limitations and Directions for Future Research  
Despite the promising results of this research, several limitations should be acknowledged. First, the findings  
are based on a non-probability sampling method, and data were collected exclusively from firm managers, which  
limits the generalizability of the results. Second, the cross-sectional design of the study restricts the ability to  
draw causal inferences among the variables. Third, the findings reflect the specific context of the Tunisian  
chemical industry, which raises questions about the generalizability of the results to other sectors.  
Future research should consider longitudinal designs to better account for potential reverse causality.  
Additionally, to enhance the generalizability of findings, future studies should extend the investigation to other  
sectors and industries. Researchers may also consider employing alternative data collection methods, including  
increasing the number of respondents per firm,  
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