Ungrounded and damaged power cords pose a major fire hazard and even violate many different security codes. Be sure to regularly inspect cords and wires for just about any damage, deterioration, and check to ensure outlets aren't overloaded. It’s important to check that they are not running across walk areas and discontinue use of damaged cords or cords with broken prongs.
There are many other ways to keep your office space safe by preventing hazards. One of the biggest problems in most offices is the amount of wires and cords running across and through high traffic areas. To help handle this, try installing a cable management access floor.