It is up to the factory to decide whether a physical examination is needed. Because the labor insurance system is implemented now, if there is no medical examination in advance, the factory needs to bear the insurance responsibility. At that time, it will not be clear whether it is caused by the recurrence of employees' old diseases or labor. Therefore, most employers now require physical examination to distinguish between old diseases and new diseases. And try not to recruit sick people who are not suitable for work and reduce the responsibility of recruitment.