§ 309. Non-duplication. No compensation under the provisions of this
article shall be payable to any civil defense volunteer or to the
dependents of a deceased civil defense volunteer otherwise entitled to
receive workers' compensation under the provisions of this chapter or of
any other law, or volunteer firefighters' benefits or volunteer
ambulance workers' benefits under the provisions of the volunteer
firefighters' benefit law or the volunteer ambulance workers' benefit
law or of any other law, or if the disabled civil defense volunteer or
the dependents of a deceased civil defense volunteer are entitled to
receive benefits under the disability benefits law or similar statute of
any state or under any disability or retirement or insurance program of
an employer who has contributed to the cost thereof or under any
provision of benefits by or under laws of the federal government or a
state or political subdivision thereof, except only as herein provided.
Compensation payable under this article shall in such event, or any of
them, be reduced to an amount which, together with such other
compensation or benefits, shall not exceed in aggregate the amount of
compensation to which the claimant, or his dependents, would be entitled
under this article but for such other provision.