Company to buy commercial supplemental insurance is generally not required to investigate the employee's medical history, because the company purchased most of the commercial insurance belongs to the accident medical and accident insurance, he is only responsible for the insurance liability is the employee in the commute to and from work and in his company in the accident caused by injuries, that accident is not to investigate the employee's medical history, if you buy the medical insurance That is, the employee will be underwritten, the need for employees to inform their own day of the disease is the insurance company is not allowed to take the initiative to inquire.