In most cases, the answer is no. Employees are only entitled to refuse to work if they believe they are in imminent danger. Section 13(a) of the Occupational Safety and Health Act (OSH Act) defines “imminent danger” to include “any conditions or practices in any place of employment which are such that a danger exists which can reasonably be expected to cause death or serious physical harm immediately or before the imminence of such danger can be eliminated through the enforcement procedures otherwise provided by this Act.” OSHA discusses imminent danger as where there is “threat of death or serious physical harm,” or “a reasonable expectation that toxic substances or other health hazards are present, and exposure to them will shorten life or cause substantial reduction in physical or mental efficiency.”The threat must be immediate or imminent, which means that you must believe that death or serious physical harm could occur within a short time, for example, before OSHA could investigate the problem. Requiring travel to China or to work with patients in a medical setting without personal protective equipment at this time may rise to this threshold. Most work conditions in the United States, however, do not meet the elements required for an employee to refuse to work. Once again, this guidance is general, and employees must assess whether “imminent danger” exists on a case-by-case basis.