Disabled people need a health certificate to get employment. They must pass a medical examination to see if they are unqualified. If they are not healthy, they will not be employed. Disability is just an appearance. Disabled people can get employment and work. Disability certificate and health certificate are two different things. If they are sick, they dare not use them. Once you die at work, it is regarded as a work-related injury. So you must have a health certificate.