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