The ADATSA program provides publicly-funded treatment and support for persons who are addicted to alcohol or other drugs and who are judged to be indigent and unemployable due to their addiction. The purposes of the ADATSA follow-up study include evaluating the degree to which clients become employed, decrease their use of public benefits (welfare, medical care, and further chemical dependency treatment), and avoid direct public costs. An additional purpose is to evaluate the effect on employment of adding extra vocational training to the regular ADATSA treatment. Study based on case records for a statewide sample of 486 ADATSA clients, from the original sample of 1,118 clients assessed in the fall of '89; 507 clients in three pilot vocational programs; four years of matched data from statewide records: employment security, Medicaid, treatment re-entry, and income assistance.