SAN DIEGO -- A shooting at a California postal processing facility has left six dead and another person crtically injured, 10News reported.

It happened Monday night at Goleta -- near Santa Barbara.

A former employee went on a rampage and ended up killing herself, 10News reported.

It was the first deadly shooting at a postal facility in eight years.

There were many during the 80s and 90s, including one in Escondido in 1989 that left four people dead.

There's been a concerted effort to lessen stress at the workplace in the wake of those shootings.

The shooter was a 44-year-old woman who was given a disability retirement from the postal service two years ago for psychological reasons, 10News reported.

She had a history of strange behavior but made no threats.

Monday night, she returned to the Santa Barbara processing plant, broke in at gunpoint and began shooting, 10News reported.

She killed five, wounded another and then shot herself to death.

The news spread quickly, especially at other postal facilities, like San Diego's processing center at Carmel Mountain Ranch.

"We use a business talk. (We) huddled up (the) employees and shared (the) information (and the) facts of what happened today," said Peter Miller, with the U.S. Postal Service.

Miller is the workplace improvement analyst at Carmel Mountain Ranch facility and showed 10News some of the steps taken to make it safer.

Starting with security, the parking lot gate requires an electronic passcard.

"There's a camera on them. (The) command center (is) watching as they enter (the) premises," said Miller.

More cameras and a security guard also wait at the building entrance.

"Each badge is coded with (a) security pass -- Level 5 takes you anywhere in (the) building you want to go," said Miller.

The post office is a 24-hour operation and so is the command center.

But there's much more to creating and maintaining a violence free workplace -- it begins with the job application.

"First and foremost, (there's a) selection process. (We) do background checks, drug testing (and) look at probation reports. (There's) zero tolerance for threats of workplace violence. (We) have employee support (and a) counseling program," said Miller.

Which is just as important as when it's time to go.

"(Employees are) treated them with dignity and respect even if (they're) resigning or being terminated," said Miller.

There is a threat assessment team, too. There are a lot of things being done to reduce stress and lessen risks.