Abstract: At 1:20 p.m. on August 23, 2019, Employee # 1 was kneeling next to a stock picker. He was trying to align and push in the drive tire axle. Employee # 1 was positioned between the stock picker and a set of large warehouse storage racks. Initially, the drive tire replacement for the stock picker was attempted while the machine's front end was jacked up and placed on blocks. In an attempt to get better leverage and mechanical advantage, a coworker decided to use a lift truck to elevate the stock picker. The stock picker was raised approximately 36 -40 inches off the ground by the forks of a lift truck. The coworker was assisting and was sitting on a hand cart in front of the stock picker. He was holding the drive tire in place while Employee # 1 tried to push the axel through. The elevated stock picker slid off the forks of the lift truck. Employee # 1 was kneeling on the ground, reinstalling the drive axle next to the stock picker and was struck by the falling piece of equipment. Employee # 1 was partially pinned on the ground between the stock picker and a large storage rack behind him. His upper body was in contact with the storage rack while is lower body was caught under the front of the stock picker. The storage rack was providing some support to stock picker. The forks on the lift truck were left spread apart under the load and were also tilted back. Employee # 1 was talking and responsive when emergency responders arrived onsite. He was transported via ambulance to a trauma center for evaluation and was treated without hospitalization. Employee # 1 had complaints of shoulder, leg and knee pain. "No major injuries" were found at the hospital. Employee # 1's complaints of knee pain were documented. Employee # 1 stated that he was generally stiff and sore and had right shoulder and arm pain along with right knee and leg pain.