(a) Notwithstanding any other provisions of this chapter, no employer shall be liable for payments in lieu of contributions with respect to extended benefit payments which are wholly reimbursed to the state by the federal government.
(b) Notwithstanding any other provision of this or any other section of this chapter, if that portion of § 115 of Pub. L. No. 94-566, 90 Stat. 2667 which requires unemployment insurance coverage of services performed by individuals employed by municipal or county governments or local public school districts is adjudged unconstitutional or invalid in its application or stayed pendente lite by a court of competent jurisdiction, then no employer contribution shall be payable by municipal or county governments or local public school districts, provided that their employees are covered by the Special Unemployment Assistance Act of 1974, Pub. L. No. 93-567, or similar federal law providing coverage for such employees.