Corrections systems have developed different approaches to ensure that an inmate's release into the community is gradual.  In many state departments of correction, inmates nearing their statutorily mandated release date or those who have been granted a parole are assigned to prerelease programs.  Some of these programs involve assignment to a prerelease housing unit either within a minimum-security unit or in a community-based setting (such as a halfway house).  Correctional discharge planners assigned to these programs help make community contacts and referrals for housing, employment, and services.