For the purposes of this Part, members of the New York State Employees' Retirement System or the New York State Policemen's and Firemen's Retirement System who are receiving benefit payments from either Workers' Compensation or other employer-funded disability programs and whose employment has not terminated by resignation, employer action or any other means, shall be considered to be in service upon which membership in the system is based for a period not exceeding two years from the last date the member was being paid on the payroll.