Liability

While repairing a car, things like clips, etc. break

Q: I work at a mechanic shop the owner is muslim now sometimes while working on a car things break do I have to ask forgiveness for accidentally or intentionally breaking something like when I want to open a bolt a clip was in the way so i break it to move the bolt but others in the shop can open it without breaking it as they are more experienced then me so what do I have to do if I break something? When I break something the owner says its between me and the customer sometimes he wont tell them that something broke but he will lessen the price so what do I have to do if I break something?