The inmates who are involved in the IMPACT Program are selected by designated Drug Courts within the Municipal and Superior courts of Los Angeles County. Inmates must have approval by an authorized Drug Court, the contact service providers (IMPACT Center) and the Sheriff's Department, to participate in a twelve-step curriculum partially based upon the tenets of the Narcotics Anonymous program. When an inmate completes the program, the IMPACT staff makes a recommendation to the court for follow-up monitoring, which can last up to eighteen months. The monitoring may include drug testing, non-custodial supervision, employment authorization, and continued participation in the twelve-step program.