Data from the National Survey of America's Families (NSAF) in 13 states for 1997 and 1999 was used to study how welfare reform policies, mandated by the 1996 passage of the Personal Responsibility and Work Opportunity Reconciliation Act, affected employment of single mothers with children. The states were Alabama, California, Colorado, Florida, Massachusetts, Mississippi, Minnesota, New Jersey, New York, Texas, Washington, and Wisconsin. The study found that, in general, there were increases in employment consistent with national data that show steadily increasing employment for single women with children over this time period. For high school graduates, an increase of about 5 percent in currently employed single mothers with children and an increase of about 7 percent in weeks worked last year among single mothers in the group of states was recorded. Contrary to expectations, the study also found that individual state welfare-reform policies did not have a differential effect on increases of single mothers previously on welfare finding and keeping employment. The increases were about the same in all 13 states, when accounting for general economic trends. (Contains 13 references.) (KC)