The term community work and training program shall be defined as follows: A plan jointly entered into between the Department of Public Welfare and an agency, department, board or commission of the state or federal government, county, city or municipal corporation which is subject to approval of the Department of Public Welfare under which the state or federal government, county, city or municipal corporation undertakes to provide work in and about public works or improvements, utilizing labor and services required to be performed by applicants or recipients of public assistance.