When employees work in locations where there is a risk of receiving eye injuries such as punctures, abrasions, contusions, or burns as a result of contact with flying particles, hazardous substances, projections or light rays, the employer must provide and ensure that employees use protection suitable for the exposure. A face shield can be attached to a helmet to provide more protection than safety glasses alone. In cases in which employees are welding, the lens of the shield must be properly shaded.

Face shield refers to a variety of devices used to protect a medical professional during a procedure that might expose the worker to blood or other potentially infectious fluid. An example is the use of a CPR mask while performing Rescue breathing or CPR. Another example is the use of Personal Protective Equipment to guard the face against splashing, spraying or splattering of blood or other potentially infectious materials.