According to a survey by The Hartford Financial Services Group, 40 percent of adults across the country report seeing signs of increased security since September 11. Beefed-up security was observed most often in the Northeast, and least often in the Northwest.

The survey of nearly 400 employed adults also found that fewer than half of those questioned conduct emergency evacuation drills.

Following unauthorized entry, the second most likely safety threat was harassment - 17 percent reported harassment at work. In addition, 16 percent cited on-the-job violence.

About 15 percent said unsafe furniture or equipment had been used at their workplaces, and 11 percent said they or a colleague had experienced unprotected occupational exposure to chemicals and other substances.

The Hartford recommends use of picture or other positive identification cards for employees, and requiring visitors to sign in upon entry and be accompanied by an authorized employee during their visits.

To minimize the chance for violence, The Hartford points to strategies like carefully controlling access to workplace facilities and training managers and supervisors on warning signs that potentially violent employees may exhibit. The insurance group also recommends zero tolerance for any type of violence, including verbal and physical threats, as well as the destruction of property.