Talking about sheeting on paper, it was not uncommon to be behind another PC and see him hit a bump and the clip board and papers would go flying out the door.
As a Steward we told hourly's to never pay for any lost or damaged company property, per our local officials. The company is insured for everything. Grieve it, and in the hearing, if some sort of gross negligence is proven against the hourly, you may settle on paying half. But to prove negligence that grievous, they will probably try to fire you anyway. We had the first and second generation Diads, and several guys, in our center alone, left one sitting on the bumper and pulled off and crushed them. All the center manager did was have a PCM the next day on being aware of where you sat your board.
If a current Steward has language stating otherwise, in the book, I defer to them.