The liability of the several employers in the case of multiple enrollees (a pensioner receiving benefits from a retirement system on the basis of several positions covered by the same system) whose enrollments occurred on or before May 21, 2010, will be prorated on the basis of the final salaries reported to the system prior to retirement. Multiple membership is not permitted for enrollments after May 21, 2010.
N.J. Admin. Code § 17:1-8.1