Increase in Home Labor When the amount of labor at Home increases by the amount ΔL, the origin for agriculture shifts to the right by that amount, from 0A to . The marginal product of labor curve in agriculture also shifts right by the amount ΔL. Equilibrium in the Home labor market is now at point B: wages have fallen to W′ and the amount of labor has increased in manufacturing (to 0ML′) and in agriculture (to ).