Preferred Staffing Group (PSG) is a woman owned small business that creates opportunities to match hard working individuals w ... ith the clients that need them! Founded in 1987 and based in Washington, DC, PSG has maintained effective and successful relationships with over forty eight federal agencies since it’s founding in 1987. This knowledge base and wealth of experience allows the staff at PSG to respond flexibly and quickly to both its clients and associates. We understand the changing needs of both the client and the jobseeker in this fast paced economic climate. Let us help you today! Self Certified WOSB (Awaiting ed/WOSB) Certified WBE (Local,Small,Enterprise Zone) NAICS: 541199, 541611, 541612, 541990, 561110, 561311, 561312, 561320, 561421, 561492, 561499 PSC: R601, R603, R606, R607, R699, R702, R706, R799 read more