Supreme Court of Pennsylvania March 22, 2000, 9 E.D. Appeal Docket 1999 (Kmart Corp. v. Workers' Compensation Appeal Board)

OPINION

CAPPY, Justice.

We granted allocatur in this ease to address whether the Commonwealth Court erred in affirming the award of workers’ compensation benefits to an off-duty employee who sustained a mental injury as a result of witnessing an attack upon a co-employee. For the following reasons, we reverse.