"While this decision arises out of the private sector, it has application and force to public employers. The California Supreme Court in Retired Employees' Association of Orange County v. County of Orange has similarly held that retiree medical benefits contained in a collective bargaining agreement are to be interpreted according to ordinary contract principles." [M&G Polymers v. Tackett, No. 13-1010 (U.S. Jan. 26, 2015)]