Data from the Panel Study of Income Dynamics (1967-87) revealed little change in persistence of female labor supply because women have tended to become continuous workers, replacing continuous nonworkers. Periods of reduced hours are now less prolonged among older women. Employment patterns now appear to develop before marriage. (SK)

A study examined schooling, weekly and annual working hours, and hourly earnings of women organized into nine birth cohorts, 1920 to 1964. Many more women are working now than did 20 years ago. The gap between the work of married and unmarried women has narrowed. Schooling and wage differences have widened in recent cohorts. (SK)