16 Pa. Stat. § 4710.1
A participant in on-the-job training, work experience and public service employment whose employment with the county is funded in whole or in part by the Federal "Comprehensive Employment and Training Act," as amended, shall not be or become a member of the employes' retirement system as established and maintained under Article XVII of this act unless provisions are approved and implemented by the retirement board, in accordance with regulations adopted pursuant to the "Comprehensive Employment and Training Act," as amended, whereby all employer costs of providing for membership or service credits in the retirement system attributable to CETA participation are payable from funds provided under the "Comprehensive Employment and Training Act."
16 P.S. § 4710.1