Giant Eagle Inc. OK Grocery Company v. WCAB (Weigand)

In Giant Eagle Inc. OK Grocery Company v. Workers' Compensation Appeal Board (Weigand), 764 A.2d 663 (Pa. Cmwlth. 2000), appeal denied, 566 Pa. 651, 781 A.2d 149 (2001), the Court held that a 1996 amendment to section 306(b)(1) of the Act, 77 P.S. 512(1), which changed the date by which the limitation on the claimants' receipt of combined wages and benefits is calculated, could not be applied retroactively to claimants whose injuries were sustained prior to the amendment's effective date because the change affected the claimants' substantive rights under the prior version of the Act to receive a particular amount of compensation.