Employee went to climb up the crossover just outby 44BK on 38-Butt beltline. When the employee stepped up on the first step to grab a hold of the handles, the crossover slid off the belt rail and dropped down on one side. The employee felt a sharp pain in the right shoulder. The EE continued to work until 9/29/23 when the doctor took EE off work until an MRI could be scheduled.