For the Employment and Training Administration of the U.S. Department of Labor, IMPAQ conducted a non-experimental net impact evaluation of the Workforce Investment Act (WIA) program to estimate the average impact of the program across individuals, that is, the difference in average earnings or employment following program participation, as compared to the average if these individuals had not participated in the program. The study focused on the Adult and Dislocated Worker programs which offer three levels of service: core services (e.g., outreach, job search and placement assistance, and labor market information), intensive services (e.g., comprehensive assessments, development of individual employment plans, and counseling and career planning), and training services (e.g., occupational and basic skills training that link customers to job opportunities in their communities). To support this study, IMPAQ collected and processed unemployment insurance and wage records administrative data from 12 states, covering approximately 160,000 WIA participants and nearly 3 million comparison group members. IMPAQ then employed state-of-the-art, non-experimental methods to compare WIA program participants with matched comparison groups of individuals who either did not receive WIA services or did not receive WIA training services.
US Department of Labor, Employment and Training Administration. (2008). Workforce Investment Act non-experimental net impact evaluation: Final report. Washington, DC: Benus, J., Mueser, P., Heinrich, C. J.,& Troske, K. R.