(b) Notwithstanding the provisions of section 74 of this act and subsection (a) of this section, every person, other than a non-veteran elected official, becoming an employee of a county, board of education, municipality or school district after June 30, 1966, who is not eligible to become a member of another retirement system, shall be required to become a member of the Public Employees' Retirement System. Notwithstanding the provisions of section 74 of this act and subsection (a) of this section, membership in the retirement system shall be optional with any elected official who is not a veteran, regardless of the date he assumes office, and with any other person in the employ of any county, board of education, municipality or school district on June 30, 1966, provided such elected official or other person is not then a member and is not required to be a member of the retirement system pursuant to another provision of this act, and provided further that such person is not eligible to be a member of another retirement system. Elected officials commencing service on or after the effective date of sections 1 through 19 of P.L. 2007, c. 92(C.43:15C-1 through C.43:15C-15, C.43:3C-9, C.43:15A-7, C.43:15A-75 and C.43:15A-135) shall not be eligible for membership in the retirement system based on service in the elective public office, except that an elected official enrolled in the retirement system as of that effective date who continues to hold that elective public office or, for an elected official specified in section 5 of P.L. 2017, c. 344(C.43:15A-7.5), another elective public office, without a break in service shall be eligible to continue membership in the retirement system under the terms and conditions of enrollment. The provisions of this subsection shall not apply to any person whose position is temporary or seasonal, nor to any person in office, position or employment for which the annual salary or remuneration, or the number of hours of work, is fixed at less than that which is required for membership pursuant to section 7 of P.L. 1954, c.84 (C.43:15A-7) as applicable to the member, nor to any person whose position is not covered by the old age and survivors' insurance provisions of the federal Social Security Act. After the effective date of P.L. 2010, c. 1, the provisions of this subsection shall not apply to any person in office, position or employment for which the hours of work are fewer per week than those required for membership pursuant to subsection d. of section 7 of P.L. 1954, c.84 (C.43:15A-7), unless the person shall have been a member since that effective date continuously. No credit shall be allowed to any person becoming a member of the retirement system pursuant to this subsection for service rendered to the employer prior to July 1, 1966, until the provisions of section 74 of this act have been complied with, in which event such credit shall be allowed in accordance with the provisions of subsection (a) of this section; except that the governing body of any county, board of education or municipality may, by resolution, consent to the allowance of such credit and file a certified copy of such resolution with the board of trustees of the Public Employees' Retirement System.