Pennsylvania Statutes Title 43 P.S. Labor § 908. Allocation of benefit costs

(a) If benefits paid to an individual are based on wages paid by one or more employers that are liable for payments in lieu of contributions and on wages paid by one or more employers who are liable for contributions, the amount of benefits payable by each employer that is liable for payments in lieu of contributions shall be an amount which bears the same ratio to the total benefits paid to the individual as the total base-year wages paid to the individual by such employer bear to the total base-period wages paid to the individual by all of his base-period employers.

(b) If benefits paid to an individual are based on wages paid by two or more employers that are liable for payments in lieu of contributions, the amount of benefits payable by each such employer shall be an amount which bears the same ratio to the total benefits paid to the individual as the total base-period wages paid to the individual by such employer bear to the total base-period wages paid to the individual by all of his base-period employers.