77 Pa. Stat. § 1510
If, after any disability or death, the employer and the employe or his dependents shall fail to agree upon the facts thereof and the compensation due under this act, the employe or his dependents may present a claim for compensation to the board.
Whenever any claim for compensation is presented to the board, and is finally adjudicated in favor of the claimant, the amounts of compensation actually due at the time the first payment is made after such adjudication shall bear interest at the rate of six per centum per annum from the day such claim is presented, and such interest shall be payable to the same persons to whom the compensation is payable.
In case any claimant shall die before the final adjudication of his claim, the amount of compensation due such claimant to the date of death shall be paid to the dependents entitled to compensation, or, if there be no dependents, then to the estate of the decedent.
77 P.S. § 1510