Terry - For the fifth year re-survey, you must use the OFCCP mandated form again and send it to all employees. For years in-between one and five, all you have to do is inform employees (via letter, email, etc.) that if their status as an individual with a disability has changed, they should inform you.
You can use this OFCCP audit checklist to ensure you're doing what is required to maintain OFCCP's regulations including VEVRAA, Section 503, and EO 11246. Or request a demo to streamline your compliance and recruiting efforts.