The evaluation employs administrative data from 12 states, covering approximately 160,000 WIA Adult, WIA Dislocated Worker and WIA Youth participants and nearly 3 million comparison group members. Focusing on participants who entered WIA programs between July 2003 and June 2005, the evaluation considers the impact for all those in the program, the impact for those receiving only Core or Intensive Services, and the incremental impact of Training Services. This dataset contains all of the information used to conduct the non-experimental evaluation estimates for the 1) WIA Client Treatment Group and 2) The Unemployment Insurance and Employment Service Client comparison group. The administrative data collected by IMPAQ for the "Workforce Investment Act Non-Experimental Net Impact Evaluation" project were received from state agencies in three segments: annual Workforce Investment Act Standardized Record Data (WIASRD) or closely related files, Unemployment Insurance data, and Unemployment Insurance Wage Record data. The analysis were conducted for twelve states; however, based on the data sharing agreements, the Public Use Data (PUD) set includes data for nine states only. Our agreement for use of these data required that the identity of those states was not revealed. As a result, all geographical identifiers were removed to preserve states' anonymity.