Wage Determination in Lewis Dual Sector Economy

Arthur Lewis developed the dual sector model of economic development to explain the transition from a traditional agricultural economy to a modern industrial economy. His model highlights the interaction between the rural and urban sectors, emphasizing how labor shifts from agriculture to industry, driving economic growth and development in emerging economies.

In the Lewis model, the modern sector represents advanced industries that utilize technology and skilled labor, leading to increased efficiency and output. This high productivity is essential for economic growth, as it generates surplus labor and capital that can be reinvested, ultimately facilitating the transition from traditional to modern economic structures.

In the Lewis model, the traditional sector encompasses activities that are often labor-intensive and less technologically advanced, such as agriculture and small-scale trading. This sector typically represents the subsistence economy, where production is primarily for local consumption rather than for market exchange, contrasting with the modern sector, which focuses on industrialization and higher productivity.

In the Lewis model, labor is attracted to the modern sector due to the promise of higher wages compared to the traditional sector. This wage differential incentivizes workers to leave lower-paying, less productive jobs in agriculture for more lucrative opportunities in industrial or urban environments, driving economic development and growth.

In the Lewis model, the subsistence wage is the minimum income required for a worker to meet their essential needs, such as food, shelter, and clothing. This wage ensures that workers can maintain a basic standard of living, which is crucial for their survival and productivity in the labor market.

In the traditional sector, labor often faces limitations such as outdated technology and lack of resources, leading to minimal output increases from additional workers. As a result, the marginal productivity of labor tends to be very low or nearly zero, indicating that adding more labor does not significantly enhance productivity.

In the Lewis model, the wage gap between the traditional agricultural sector and the modern industrial sector creates an incentive for workers to migrate. Higher wages in the industrial sector attract labor from rural areas, aiming for better economic opportunities, which drives migration and contributes to economic development in the modern sector.

Profits generated in the modern sector are typically reinvested back into the business as capital. This capital is used for purchasing new equipment, expanding operations, or funding research and development, which helps to enhance productivity and drive growth within the sector. Reinvestment is crucial for sustaining competitive advantage and long-term success.

In the Lewis model, economic growth is driven by the movement of labor from the traditional agricultural sector to the modern industrial sector. This transition increases productivity and output, leading to overall economic development as the modern sector expands and creates more jobs, ultimately enhancing living standards.

In the Lewis model, the turning point occurs when the surplus labor in the traditional sector is fully absorbed into the modern sector. As this surplus diminishes, wages begin to rise, signaling a shift in the economy from a labor-abundant phase to a more developed stage, where labor becomes a scarce resource.

In the Lewis model, the modern sector wage is established to attract labor away from the traditional sector. A wage set at 30% above the subsistence wage incentivizes workers to migrate, ensuring a sufficient labor supply for industrial growth while maintaining a balance that prevents excessive wage inflation in the modern sector.

The Lewis dual sector model illustrates the transition from a traditional agricultural economy to a modern industrial economy, highlighting the role of surplus labor in rural areas. It primarily focuses on developing countries, where this duality is most pronounced, as they seek to enhance productivity and economic growth through industrialization and urbanization.