In Asplundh Tree Expert Co. v. Workers' Compensation Appeal Board (Humphrey), 852 A.2d 459 (Pa. Cmwlth. 2004), the claimant was employed by the employer as a tree trimmer. The claimant went through safety training with the employer and was familiar with the employer's "ground-to-sky" policy. He understood the policy to mean that an employee must put his safety line into a tree first, find a crotch in which to put the line, and secure himself. He sustained injuries to his right arm and hand when he fell off of a tree. At the time of his accident, the claimant did not have his safety line in the crotch of a tree. He filed a claim petition, the WCJ granted the petition, and the Board affirmed. On appeal, we held that the claimant was required by the nature of his job as a tree trimmer to climb trees and that although he violated the employer's policy requiring him to be tied into a tree at all times, his violation was not so disconnected from his duties as to render him a stranger or a trespasser. Consequently, the Court affirmed the Board.