can a employer ask for a police repot

Are you an "at will" employee? No union, no private contract, not working for the government. If you are "at will" the employer needs no reason to let an employee go. None. So, technically you do not have to provide the police report. But if you don't, and you are "at will", the employer does not need to keep you on the payroll. The more important question is why do they want the police report? Do you have a history of absences? Do they not believe the excuse? If the employer does not believe you then you need to take action immediately to repair that situation. You probably took photographs of the damage to the cars with your phone. If it was a rental car then that company has a record of damage. If it was a private care then the body shop which repaired the damage has records. If the damage was not repaired on a private care then someone can draft an affidavit of ownership of the car along with sworn statements that the photographs they attach reflect the damage done while you were a passenger. If the driver was the owner then they can provide the affidavit with the photographs.   "At will" employees have to prove discrimination if they object to being terminated. That usually requires an employment lawyer. You should call several employment lawyers and ask them whether the above is true and what might you do in the event that you are being discriminated. If it's not discrimination, better to start the job hunt now. Good luck.