; . 4. Establishment of a maximum hours of Federal firefighters’ regular workweek Section 5545b of title 5, United States Code, as amended by section 3, is further amended by adding at the end the following: (f) Not later than one year after the date of enactment of the Federal Firefighter Pay Equity Act, the Office of Personnel Management shall prescribe regulations establishing the maximum number of regularly reoccurring hours which comprise a workweek for a firefighter covered by this section. The maximum number of such hours shall not exceed an average of 60 hours per week. . 5. Effective date The amendments made by this Act shall apply with respect to any annuity entitlement to which is based on a separation from service occurring after the end of the 60-day period beginning on the date of the enactment of this Act.