Martin opened up a small business that prints custom T-shirts, mugs, and trophies. He trains his 15 employees carefully, and after two years, no employee has experienced an on-the-job injury or illness. Under the requirements of the Occupational Safety and Health Act, what must Martin post in the workplace?

A) OSHA Small Business Handbook
B) OSHA Certificate of Compliance
C) form 300A, Summary of Work-Related Injuries and Illnesses
D) form 310A, Certification of Injury-Free Status
E) general-duty clause

As Martin's business has not experienced any work-related injuries or illnesses, he is required to post Form 300A, which is a summary of work-related injuries and illnesses. This form must be posted in a visible location for employees to see. The OSHA Small Business Handbook may be helpful for Martin to have on hand, but posting it is not a requirement. The OSHA Certificate of Compliance and Form 310A do not exist, so they cannot be the correct answer. The general-duty clause is a requirement for employers to provide a safe and healthy workplace, but it does not need to be posted in the workplace.