N.C. Gen. Stat. § 162-58
The board of commissioners of the several counties may enact by resolution all necessary rules and regulations for work on projects to benefit units of State or local government by persons convicted of misdemeanors or felonies and imprisoned in the local confinement facilities or satellite jail/work release units of their respective counties. The sheriff shall approve rules and regulations enacted by the board. Prisoners working under this section shall be supervised by county employees or by the sheriff. The rules enacted by the board of county commissioners and approved by the sheriff shall specify a procedure for ensuring that county employees supervising prisoners pursuant to this section be provided with notice that the persons placed under their supervision are inmates from a local confinement facility or a satellite jail/work release unit.
N.C. Gen. Stat. § 162-58