Flex Staff Temporary Service » Members The following staffing companies are members of the Wisconsin Staffing Association. Looking for a staffing company in Wisconsin? Search Our Member Directory: Go back to directory. Add to Address Book. Flex Staff Temporary Service Flex Staff Temporary Service Contact: Mike Hackbarth Work 800 Westhill Boulevard Appleton WI 54914 work Work Phone: (920) 731-8082work Work Email: email@example.comINTERNET Website: http://www.flexstaff.com Categories: Association Members Updated 1 year ago.