Dude i don’t know where you live, but you shouldn’t have yo pay off breakages at work. it would be covered by insurance that the company has. Making you pay that off is illegal and if you are in a union you should inform them of this.
Start a patron might be able to live off cup noodles for a few days while you pay off that slab. Hope you got to keep it. Make some chair tops out of it or som ething