Parents’ Fair Share (PFS) research on child support enforcement has several goals. First, it seeks to provide insights into the interaction between local child support enforcement systems and noncustodial parents whose children are on welfare. The approach taken in this report is to analyze what happened when the seven sites in the PFS Demonstration sought to identify low-income, unemployed noncustodial parents appropriate for PFS and refer them to the program. The report carries this story up to the point of referral of appropriate noncustodial parents to the program. Later reports in the project will continue the story, examining the implementation of PFS’s enhanced child support enforcement for noncustodial parents referred to the program and estimating program impacts on payment of child support and other key outcomes.