In this paper, by using a generalized Harris-Todaro model that incorporates
an urban non-polluting sector, and supposes a dual economy inherent in an
LDC, we examine the backward incidence of pollution control on some key var
iables of interest. Given a relatively capital intensive polluting sector,
stricter pollution controls may result in a reduction in unemployment, an i
ncrease in national income and migration from the agricultural sector. The
results from our model differ from that of a previous model that demonstrat
ed a reverse how of labor to the agricultural sector from stricter pollutio
n controls.