What happened
While an aircraft was undergoing engine shutdown procedures on the parking ramp, an equipment loader operator attempted to open the entry door. At the time of the attempt, the aircraft's red rotating beacons were still active. As the cabin underwent depressurization, the door opened with enough force to knock the operator off the equipment loader.
Company ramp safety policy requires that personnel do not approach an arriving aircraft until it has reached a complete stop at its designated parking position, engines are shut down, wheels are chocked, and the red rotating beacons have been turned off.