The Optional State Supplementation (OSS) Program provides monthly cash payments to indigent elderly or disabled individuals who live in special non-institutional, residential living facilities, including assisted living facilities, adult family care homes and mental health residential treatment facilities.  To qualify for OSS, an individual must need assistance with the activities of daily living due to physical and/or mental conditions.  The program provides a monthly check that supplements the individual’s income so they can pay the facility a provider rate established by the Department.