24 Pa.C.S. § 8322: Joint coverage member contributions.

The regular member contributions made to the fund as and to the extent required by section 8321 (relating to regular member contributions for current service) for current service of a joint coverage member shall be reduced by 40% of the tax on taxable wages prescribed by the Federal Insurance Contributions Act, IRC § 3101 et seq., exclusive of that portion of such tax attributable to coverage for disability and medical benefits.