This paper analyzes the relationship between changes in unionization and firm growth. Average growth is significantly low er in manufacturing firms that experience successful union elections bu t these strong "effects" are largely illusory. The authors find no evidence of a significant...

The authors estimate the short-run and life-cycle effects of unplanned children on unwed mothers by comparing unmarried women who first gave birth to twins with unwed mothers who bore singletons. They find large short-term effects of unplanned births on labor-force participation, poverty, and...