Have a monthly, weekly or whatever disaster drill. It takes little time but can be a lifesaver. Check emergency supplies, and practice alternate ways out. Waxed paper or PJ inside a mask will help simulate smoke conditions, and train people "how" to see in smoky or low light conditions.

Encourage employees to have their own kits, and have dust masks, eye protection, lights, leather gloves, good sturdy shoes, a water bottle or 5, energy bar, a few days prescription meds, a good miltitool, and building map in the lit. A small fanny pack is very handy.

Every employee should have a marked building map, and a area map with locations marked with rendezvous places in case of needing to bail out of the building. A master list of employee emergency contact info can be put in Mgt kits.