This study is a micro analysis of change in the distribution of operated area over time in two villages of the Punjab. There is considerable controversy over whether the green revolution, so successful in the Punjab, has increased concentration of operated area. Existing micro studies show either an increase or a decrease in concentration. This study uses an exogenous-endogenous model to show two divergent trends coexisting in the Punjab. The canal colony village with a typically low concentration of operated area has become more concentrated over time. The South-Western Punjab village -with a typically high concentration of operated area has remained constant over time.