No action shall be taken with reference to an employer that is a local government, other than the performance of inspections under §§ 50-3-301 - 50-3-306 performed for the purpose of determining the effectiveness of programs developed and registered by the employers under § 50-3-910, and other than investigation and enforcement actions under § 50-3-409, unless the local government has elected to be treated as a private employer.
T.C.A. § 50-3-911