Emergency contact numbers should be kept current and posted on the outside of the laboratory door. This is the only way emergency personnel and responders can contact the appropriate lab personnel if an incident occurs. Since emergencies often happen during off-hours, the numbers listed on the sign should be numbers where the person can be immediately reached.
If there are security concerns and lab workers prefer not to post emergency contact information on the lab door, please be sure they are listed on the Laboratory Online Inventory. This information is available only to emergency responders, not the general public.