Construction Labor Contractors (CLC) offers skilled labor services and construction staffing solutions to construction contractors nationwide. Plan better, build smarter & reduce risk with CLC. Let us make construction staffing work for you. Since 1997 Construction Labor Contractors (CLC) has been reducing headaches for construction contractors and industrial project managers by providing skilled construction workers, flexible skilled labor and HR management. With leased construction labor staffing from CLC, life gets a lot more workable.