A KSAT 12 Defenders investigation found 16 incidents of workplace violence occurred involving City of San Antonio employees in a 16-month period beginning in 2012.
That investigation comes on the heels of the workplace shootings at the Navy Yard shootings in Washington, D.C. that left 13 people dead.
One of the San Antonio incidents occurred at city offices on Brooks City Base.
Investigators said a Public Works employee brought a loaded handgun to work, talked of having numerous firearms and made statements about shooting people.
A second incident happened at the Solid Waste South Central Service Center.
An employee left a .40 caliber Smith and Wesson pistol in a backpack and it was loaded.
Neither of those employees is currently working for the city. One was fired, the other resigned.
Joe Angelo, chief human resources officer with the City of San Antonio, said anytime a weapon is found in regard to these incidents, police are called immediately.
"Each threat is taken very seriously,” Angelo said. “Again, if it's an immediate threat police are called in, they handle it. If it's of less immediacy we send investigators, we get statements (and) we gather the facts."
In a less serious incident, two employees got nose to nose after a disagreement about a cookie left on the floor in an office.
In another incident, Alamodome maintenance workers got into a dispute in March on the weekend when major league baseball came to town and the Rangers played the Padres.
One maintenance worker joked to another that a co-worker was so old if someone hit him in the face he would collapse into dust.
That employee heard about it and slapped the worker who made the statement across the face.
Even verbal threats are taken seriously. "Verbal and nonverbal acts of violence can be a violation of our policy," Angelo said.
For example, an incident at the Pan Am Branch Library was investigated as workplace violence.
An employee said when she returned from leave everyone at the branch may be dead.
In all 16 incidents, seven employees resigned, six were fired and three got counseling.