A mask that closely and completely covers the nose and mouth (i.e. without leaving a gap between the mask and the face) should be worn in indoor settings while at the workplace, except when:
a) not interacting in person with another individual present in that area and employees are not in customer-facing areas where interaction is likely to happen;
b) eating, drinking or consuming medication;
c) engaging in strenuous physical exercise; or
d) other equipment must be worn during the course of work (e.g. motorcycle helmets).
The following specific groups of persons may use a face shield, in place of masks:
Children 12 years and below, who may have difficulty wearing and keeping face masks on for a prolonged period of time;
Persons who have health conditions that may result in breathing or other medical difficulties when a mask is worn for a prolonged period of time; and
Persons who are speaking to a group in a classroom or lecture-style setting, where they largely remain at the spot from which they are speaking, and are able to maintain a safe distance away from any other persons.
A face shield has to be must be worn properly so that it covers the entire face, from the forehead to below the chin, wrapping around the sides of the face.
Plastic spit guards predominantly cover the mouth and are not considered as masks. Face coverings such as neck gaiters, bandannas, scarves or handkerchiefs are not considered as masks.
If the risk of encountering an infectious person is high (e.g. personnel has sustained contact with many other individuals throughout the course of their work), then surgical masks and other relevant PPEs should be used instead.