Government Of Counties — California Government Code — Employees — County Employees Retirement Law Of 1937 — Establishment Of System — Ordinance establishing Date: 15 Sep 2016 TEXT PDF Current through the 2016 Legislative Session A retirement system is established in any county for eligible officers and employees by the adoption of an ordinance, accepting this chapter, by: (a) A majority vote of the electors voting on the proposition at a special or general election; or (b) A four-fifths vote of the board of supervisors. Ca. Gov. Code § 31500