Concern over the threats of terrorism and war have led many companies to take precautions regarding workers that they have abroad. These precautions include developing evacuating procedures, hiring security advisors, and in some cases relocating away from major cities. This is a very serious issue for companies who want to maintain their reputation as well as protecting themselves against lawsuits.
See "Firms fine-tune emergency plans for workers abroad", Conrad de Aenlle, International Herald Tribune, June 12, 2003