The federal Occupational Health and Safety Administration recently published some guidance for best ventilation practices to combat the spread of coronavirus. OSHA has rules governing ventilation for certain activities, such as sandblasting or working in a paint room. This marks the first time the agency touched on ventilation for all workplaces.
These are only recommendations, not rules. Businesses are not required to upgrade their ventilation systems. They could create the basis for some conversations HVAC contractors have with their commercial clients going forward. The guidance specifically states that employers should work with an HVAC professional to consider steps to optimize building ventilation.