The Commonwealth of Pennsylvania currently has no licensure or certification requirements for most construction contractors (or their employees). Pennsylvania has very few statelevel licensing regulations and largely leaves contractor licensing up to individual counties and municipalities.An act establishing a uniform construction code; imposing powers and duties on municipalities and the Department of Labor and Industry. As discussed above, there is no general requirement for subcontractors to be licensed in the Commonwealth of. This law prohibits misclassification of employees as independent contractors in all commercial and residential construction in the Commonwealth of Pennsylvania. Contractors working in Philadelphia need to have a valid license and follow operational requirements. This page outlines the regulations related to contractors. Contractors working in Philadelphia need to have a valid license and follow operational requirements. This page outlines the regulations related to contractors. Pennsylvania Discrimination Law.