2. The company keeps transfer vouchers and IOUs.
3. If the amount is large, you can sign a contract to stipulate interest and repayment.
4. You can also ask employees to provide guarantees.
Legal basis: People's Republic of China (PRC) Labor Contract Law.
Article 36 The employing unit and the employee may terminate the labor contract through consultation.
Article 39 The employing unit may terminate the labor contract under any of the following circumstances:
(a) during the probation period, it is proved that it does not meet the employment conditions;
(2) Seriously violating the rules and regulations of the employing unit.