(1) SERS members who were elected to office by statewide election and elect membership in SERS pursuant to WAC 415-110-550, may receive one month of service credit for each month during which they earn compensation pursuant to their elected positions.

(2) Except for officials covered under subsection (1) of this section, members who were elected to office or appointed by the governor to positions and elect membership in SERS pursuant to WAC 415-110-550 or 415-110-560, may receive service credit only for months during which they are compensated:

(a) In excess of ninety times the state hourly minimum wage in effect at the time they render the service; and

(b) For ninety or more total hours of work.

(3) On or after September 1, 1991, except for officials covered under subsection (1) of this section, members who were elected to office or appointed by the governor to positions and elect membership in SERS pursuant to WAC 415-110-550 or 415-110-560, may earn:

(a) One month of service credit for each month during which they are compensated:

(i) For ninety or more total hours of work; and

(ii) In excess of ninety times the state hourly minimum wage in effect at the time they render the service; or

(b) One-half month of service credit for each month during which they are compensated:

(i) For less than ninety hours but equal to or more than seventy total hours of work; and

(ii) In excess of ninety times the state hourly minimum wage in effect at the time they render the service; or

(c) One-quarter month of service credit for each month during which they are compensated:

(i) For less than seventy total hours of work; and

(ii) In excess of ninety times the state hourly minimum wage in effect at the time they render the service.