The County offers a voluntary Deferred Compensation Plan in accordance with Section 457 of the Internal Revenue Code. The Contra Costa County Employees' Retirement Association ("CCCERA") invites organizations to submit proposals on providing IRC 457(b) Deferred.An eligible deferred compensation plan under IRC Section 457(b) (or "section 457 plan") must meet the written plan document requirements. Deferred Compensation: The District offers two optional deferred compensation plans.