Staff On Site, Inc. » 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. Staff On Site, Inc. Staff On Site, Inc. Contact: John Loven, Jr. Work 1406 Willowbrook Road Suite 110 Beloit WI 53511 work Work Phone: (815) 703-7205work Work Email: email@example.comINTERNET Website: http://www.staffonsite.com Categories: Association Members Updated 2 years ago.