TexasCHLforum.com

"Last year 375 workers were killed in shootings on the job, according to the Labor Department, and in recent years the number has been lower than pre-recession levels. A 2005 North Carolina-based study in the American Journal of Public Health showed that workplaces that allowed guns were about five times more likely to have a worker get killed on the job compared to workplaces that prohibited all kinds of weapons."
Where do these statics come from? They site a study, but not specific data in the study.

I did some digging and this makes more sense
This article is from: http://www.bls.gov/iif/oshwc/cfoi/osar0014.htm" onclick="window.open(this.href);return false;
"Over the past 5 years, 2004-08, an average of 564 work-related homicides occurred each year in the United States. In 2008, a total of 526 workplace homicides occurred, or 10 percent of all fatal work injuries. About 4 out of every 5 homicide victims in 2008 were male. The type of assailants in these cases differed for men and women. Robbers and other assailants made up 72 percent of assailants for men, and 51 percent of assailants for women. Relatives and other personal acquaintances accounted for only 4 percent of assailants of homicides for men, but 28 percent for women1."

This article is from: http://www.victimsofcrime.org/library/c ... e-violence" onclick="window.open(this.href);return false;
"The majority of workplace homicides are shootings committed by robbers. Decreasing the occurrence of these crimes is a growing concern for employers and employees nationwide.
In 2011, 458 workplace homicides occurred, a decrease from 518 in 2010 and 542 in 2009. Since 1993, the number of workplace homicides declined 57 percent from 1,068 to 458."
Both these studies and more state robbery significant for violence and murder in the workplace.