According to relevant regulations, jewelry stores should first report the case to the public security organs, which will file a case for investigation as a criminal case. After the suspect is arrested, the whereabouts of stolen goods or money will be found out and then returned to the injured party, that is, the jewelry store owner. Employees can't compensate without conclusive evidence. It is a violation of the labor contract between the jewelry store and the employees.
People's Republic of China (PRC) labor contract law
If a laborer fails to sign a labor contract for more than one month within one year from the date of employment, he may demand to pay double wages, purchase insurance and compensation when canceling the contract.