Worksafe BC has released a set of guidelines for Arts & Culture facilities - specifically Art Galleries, Museums & Libraries (no precise word yet on Theatres).
Brief overview from Worksafe BC site:
These protocols provide guidance to museums, art galleries, and libraries. These employers may also benefit from reviewing other protocols if their workplace includes other work environments such as office space, retail services, or food and drink services. Employers must also ensure they are abiding by any orders, notices, or guidance issued by the provincial health officer, and the appropriate health authority, which are relevant to their workplace.
View the A&C Facilities guidelines HERE.