Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
In the early 1970s the proportion of the nonagricultural labor force self-employed in the United States ceased its downward trend and has been rising ever since. This study provides an analysis of the causes of this change. A general-equilibrium model of self- employment and wage employment is analyzed, and aggregate U.S. time- series data are used to test predictions derived from the model. The empirical analysis indicates that changes in technology, industrial structure, tax rates, and social-security retirement benefits have contributed to the reversal of the previous downward trend, which had persisted for over a century. Copyright 1987 by University of Chicago Press.