According to Vietnam Labour law, Article 21, the employers must organize the following;

• ~Employees performing hazardous occupations should have a health checkup at least once a year. 
• ~For disabled, elderly, or minor employees, health checks are performed twice a year, or once every six months. 
• ~Female workers must be provided with obstetric care and occupational disease testing. 
• ~Health check-up, assignment or transfer to heavier, riskier, or more toxic occupations, and testing once they return. Unless the Medical Assessment Council has determined that their ability to work has decreased. Unless, there are conclusions of the Medical Assessment Council on their ability to work has decreased

Failure to provide the above, the employer shall be fined from VND 1,000,000 to VND 3,000,000 per each employee, but not exceeding VND 75,000,000.