INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
ISSN No. 2321-2705 | DOI: 10.51244/IJRSI |Volume XII Issue VIII August 2025
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Impact of Flood on the Employment, Labour Productivity and
Migration of Agricultural Labour in North Bihar
Dr. Ramesh Kumar Singh
Guest Assistant Professor, Dept. of Economics, Marwari College Kishanganj Bihar-855107, India
DOI: https://doi.org/10.51244/IJRSI.2025.120800071
Received: 07 Aug 2025; Accepted: 12 Aug 2025; Published: 05 September 2025
Flood devastation creates panic situation during rainy season. In Bihar, the loss due to flood is estimated to be
about Rs. 64 crores annually, which accounts for about 35 per cent of the total loss incurred in the country due
to floods. It not only affects the agricultural production, properties and lives but also interferes in the labour
productivity, employment and wages of agricultural labours which force them to migrate elsewhere either
seasonally or permanently. About 90 per cent of the flood prone area of the state lies in North Bihar, which is
one of the major factors of the backwardness of this region. In Bihar, on average, 8.47 lakh hectares of total
areas and 3.16 lakh hectare of crop land areas are submerged annually for several weeks in the river belts of
Ganga, Burhi Gandak, Kosi, Bagmati and Sone in the state and affects 271 blocks of 15 districts and cause
huge individual and public losses to the exchequer. About 300 agricultural labourers migrate per day from
Bihar. The causes of migration are irregular and scarcity of employment opportunities and low wages in their
native place of flood prone districts of Bihar.
So, it was felt to study the extent of employment, labour productivity and migration of agricultural labour in
flood prone areas of North Bihar, the most victim region of flood in Bihar and the paper is based on the facts
and figures of the study conducted in flood prone area of North Bihar.
METHODOLOGY
The study was conducted in North Bihar, since it constitutes 90 per cent of the total flood affected areas of
Bihar. In North Bihar, Darbhanga district is highly flood prone. So, the field survey was conducted in two
villages of highly flood prone block, namely Hayaghat of Darghanga district during the year 2023-24. A
sample of 25 households from each size group of farms i.e., landless (having no land), marginal (below 1 ha
land), small (1 to 2 ha land) and large (more than 2 ha land) making a total sample size of 100 households.
Data regarding employment, labour productivity, migration and wage rates were collected with the help of
schedules and questionnaires by survey methods. Tabular analysis was done to interpret the results. However,
Cobb-Douglus production function was used wherever needed.
Technological change in Agriculture:
Before discussing the employment, labour productivity and extent of migration of agricultural labour for
different categories of households in the flood affected area, analysis of input use in agriculture production has
been undertaken to throw some light on the technological development in agriculture of the flood affected area.
The data on input use of agriculture production has been presented in table 1.
Table 1 Per hectare use of input level on different size groups of farms in flood prone area
Sr. no.
Items
Size Groups
Marginal
Large
All farms
I.
Per hectare of area under irrigation in %
91.55
63.12
74.88
II.
Human labour use in man days
122
87
108
INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
ISSN No. 2321-2705 | DOI: 10.51244/IJRSI |Volume XII Issue VIII August 2025
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III.
Bullock labour use in days
20
11
17
IV.
Machine labour use in days
3.14
3.41
3.26
V.
Expenditure on seed, manures fertilizers and
insecticide and pesticides in Rs.
310
655
546
Source: -
I. Economic survey report of Bihar 2024
II. Bihar State Disaster Management Authority
It may be observed from table 1 that area under irrigation was 74.88 per cent but majority area was irrigated by
private tubewells and pump sets. Marginal farmers constituted the highest percentage of irrigated area, but they
could not provide more than one irrigation to the crops because cost of irrigation by pump set is too costly to
be afforded by them. So, the area under irrigation provides an illusive figure in the flood prone area. Average
use of human labour per hectare was found 108-man days. The highest per hectare labour use was found 122-
man days in marginal farm size group as compared to small (114-man days) and large (87-man days) farm size
group because they have surplus labours. The highest per hectare bullock labour use was found 20 bullock
days in both marginal and small farm size groups as compared to large farm size groups (11 bullock labour
days) due to mechanization on large farm size groups. Machine labour per hectare was found higher on large
farm size group (3.41 days/ ha) as compared to small (3.18 days/ ha) and marginal (3.14 days/ ha) farm size
group. On average, the expenditure on purchased inputs i.e., seed, manures, fertilizer, insecticides and
pesticides were found Rs. 546 per hectare. The highest expenditure per hectare on use of these inputs was
found on small farm size group (Rs. 680) as compared to marginal (Rs. 310) and large (Rs. 655) farm size
group because small size groups of farms are more efficient in farming in the flood prone area.
Employment Scenario
The stark reality of Bihar rural economy is that the bulk of the work force remain unemployed and under-
employed for most of the period in the year. An attempt was made to assess the pattern of employment of
sample household of flood prone area has been presented in table 2.
The table reveals that per worker per year employment was observed to be 162-man days. Farming sector,
which was the main occupation of most workers in flood affected area, observed to be 25.32 per cent. On the
other hand. non-farming sector provided 74.68 percent of employment. Among different size group of farms in
flood prone area, per worker employment was comparatively higher on small farm (202-man days) followed
by large farm (193-man days), marginal farm (162-man days) and Figure in parentheses indicate percentage of
total employment landless (141-man days). It was further observed from the table that as the size of holding
increased the percentage employment in non-farming sector increased showing a positive relationship with size
of holding and non-farm employment.
Table 2 Pattern of employment on different size groups of households in flood prone area
Group
Sample
size
Total
workers
Farm sector
(employment in days)
Non farming
sector
Total employment
in days
Employment
per worker
Landless
25
58
5599 (57.44%)
2592
(42.56%)
8191
141.2
Marginal
25
35
22.19 (39.11%)
3455 (60.89)
5674
162.11
Small
25
45
1029 (11.34%)
8042
(90.26%)
9071
201.58
INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
ISSN No. 2321-2705 | DOI: 10.51244/IJRSI |Volume XII Issue VIII August 2025
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Overall
100
187
7666 (25.32%)
22606
(74.68)
30272
161.88
Sources: - Self collected primary data from Oct 2024 to Dec 2024, compiled and analysis.
Per-worker employment in agriculture as main occupation on different size groups of farms in flood affected
(prone) has been presented in table 3.
Table 3 Per worker Employment in agriculture as main occupation on different size group of farms in flood
prone area
Group
Sample size
Total workers
Total employment in days
Per worker employment in days
Landless
25
49
3499
71.41
Marginal
25
31
2154
69.48
Small
25
36
990
38.98
Large
25
27
885
32.78
Overall
100
133
7326
56.6
Source: - Self collected primary data during specific period
Per worker employment in agriculture as occupation on different size group of farms in flood affected area
revealed that total number of workers in agriculture as a main occupation was observed to be 133-man days
and per workers annual employment was 56.60-man days. Among the different size group of farms per worker
employment in agriculture was comparatively higher on landless labour household which was accounted to be
71.41-man days. As the size of holding increased the per worker employment as main occupation decreased in
agriculture because farmers of large size groups did not prefer to work in field due to false sense of prestige.
Productivity and wage rate of Agricultural:
The wage rate has direct bearing with productivity of labour. It is generally said that the agricultural labours
are getting less wages than their marginal value productivity. In this regard, the regression coefficient of human
labour was estimated by fitting the Cobb-Douglus function with human labour as independent variable. The
marginal productivity and average wage rate of human labour on different size groups of farms has been
presented in table 4.
Table 4 Marginal value productivity and wage rate of human labour on different size groups of farms in flood
prone area
Sr. no.
Particulars
Size Group
Marginal
Small
Large
Combined
I.
Sample size
25
25
25
75
II.
Geometric means of output per hectare
3552.12
4315.67
4361.19
4058.63
III.
Geometric mean of human labour per hectare in man days
119.75
112.73
86.13
105.16
IV.
Regression coefficient of human labour
0.2189
0.3387
0.4919
0.1846
INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
ISSN No. 2321-2705 | DOI: 10.51244/IJRSI |Volume XII Issue VIII August 2025
Page 844
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V.
Marginal value productivity of human labour
6.52
12.97
24.91
7.12
VI.
Mean of average wage of human labour in Rs
5.51
6.81
6.99
6.44
Source: - Self statistical calculations of the collected data
It may be observed from table 4 that marginal value productivity of agricultural labour (7.12) was higher than
the wage rate i.e., Rs. 6.44. The gap of MVP and was rate was comparatively higher on large size group of
farms than the small and marginal size group of farms, because the large farm size group of farms exploited the
labourers due to unemployment and under employment prevailing in agricultural labours in flood affected area.
So, the analysis also confirms the notion that agricultural labours are getting less wages than their marginal
value productivity.
Migration of Agricultural Labours
In the present paper, the migrant labourers were those who migrated as wage earners only. The present analysis
deals with number of migrants, type of job, place of migration, wage rate and percentage of income
contributed to their family. The result has been presented in table 5.
It has been observed from the table that the number of male migrants was higher (92.31 per cent) than female
migrants in flood prone area. Female migrants were found in landless household only. The most revealing fact
is the absence of migration of agricultural labour was found on small and large size groups of farms. The
majority of landless category of migrants (77.78 per cent) could find employment as wage earner in agriculture
sector. Majority of migrants of marginal group of households had preference for non-agriculture job. About
77.78 per cent of migrants of landless class in flood affected areas were seasonal migrants.
The study further revealed that many migrants of sample households of landless and marginal size group
preferred to go outside the state like Punjab, Delhi and other cities for better wage rates. It may be also
observed from the table that average wage rate in migrated places was comparatively higher in non-
agricultural sector (Rs. 80.25) as compared to agriculture sector (Rs.60).
Table 5 Migration pattern of Agriculture labour on different size groups of households in flood prone area
Particulars
Size Group
Landless
Marginal
Small
Large
Total
Number of migrants
Male
16 (88.89%)
8 (100%)
-
-
24 (92.31%)
Female
2
-
-
-
2 (17.64%)
Total
18
8
-
-
26
Period of migration
Seasonal
14 (77.28%)
3 (37.20%)
-
-
17
Permanent
4 (22.22%)
5 (62.50%)
-
-
9
Place of migration
Within State
2 (11.11%)
1 (12.50%)
-
-
3
INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
ISSN No. 2321-2705 | DOI: 10.51244/IJRSI |Volume XII Issue VIII August 2025
Page 845
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Outside state
16 (88.89%)
7 (87.50%)
-
-
23
Types of Job
Agriculture
14 (77.28%)
2 (25.00%)
-
-
16
Non-agriculture
4 (22.22%)
6 (75.00%)
-
-
Total
18
8
-
-
10
Wage rate
Agriculture
60
60
-
-
60
Non-agriculture
75
85.5
-
-
80.25 (average)
Percentage of income
Contributed to their family
27.27
37.5
-
-
32.38
Source: -
i. Department of Relief and Rehabilitation of Bihar Report 2024.
ii. Agriculture census report of Bihar 2024
Figure in parentheses indicate percentage to total migrants’ sector (Rs. 60).
The wage rate was comparatively higher in migrated places than the wage rate of native places. The percentage
of income contributed to their family was found on an average, 32.0 per cent of their total income.
CONCLUSION
It emanates from the above discussion that in flood prone area, the flood and water-logging situation have been
the major factors for the farmers to adopt and monocropping system Per worker employment in agriculture
was lower in this region, confirming the unemployment and under employment among the agriculture labours
in flood prone area in Bihar. The consolidated effects of unemployment, low wages, and slack season scarcity
of jobs due to lack of infrastructure facilities along with non-availability of adequate job opportunities other
than agriculture have accelerated the magnitude of migration of agriculture labourers from native places. The
agriculture labours are getting less wages than their marginal value productivity.
Hence, the creation of job opportunities in rural area and better flood control would minimize the migration of
agricultural labours. An improvement in productivity of crops and livestock may help in increasing wage rates.
Small scale industries like beekeeping, poultry farming, and vegetable and fruits processing in flooded areas
will increase the job opportunities to rural mass. An emphasis should also be given to suitable agricultural
technology for flooding prone areas.
REFERENCES
1. Flood report 2024 Central Flood control Department of Bihar, Patna
2. Times of India, New Delhi Frb-2023, Page-08
3. Central Water Commission, Govt. of India
4. Ganga Action plan a review Yojna July 2020
5. Labour Resources Dept. of Bihar -2024
6. Economic Survey of Bihar 2024