OPERS provides age and service retirement, disability benefit and survivor benefit programs for public employees throughout the state. Ohio Deferred Compensation is a supplemental 457(b) retirement plan for all Ohio public employees.It provides participants with educational tools. The City offers a deferred compensation plan to all employees through two (2) provider, Ohio Deferred Compensation and Voya. It's easy, tax deferred and flexible. Ohio Public Employees Retirement Plans (OPERS), Retirement Plan. Phone: 800-222-7377. The City is seeking proposals for firms with demonstrated experience as providers of 457 Deferred. The County Commissioners Association of Ohio Service Corporation (CCAOSC) was formed in 1991 to develop and sponsor services that assist county government.