Are employees who use filtering facepiece respirators (dust masks) voluntarily (e.g., for employee comfort) also required to have medical evaluations?
No. If the employer has determined that there is no hazard, and dust mask use is voluntary, then no medical evaluation is required. If employers allow voluntary use of this type of respirator, then they must provide the employee the information contained in Appendix D of the standard, and ensure that such respirator use will not itself create a hazard.