JACKSONVILLE, Fla. -- Al Aragona owns three Bojangles restaurants with 75 employees and says when he has to fire an employee safety is paramount.

"You try to put yourself in a position where nothing can happen," said Aragona .

He saidhe's always concerned about a potential backlash.

"You don't what their reaction is going to be," he said.

At Giddens Security Corporation Charlie Jenny, director of operations, said in this economy there's a growing concern among employers.

"We get calls from employers big and small who tell us about impending layoffs," he said, "they're concern about security."

Jenny said his officers have been hired for just job terminations.

"If an employer feels a perceived threat or something that is not right they will call us just to have us there as an extra security measure," said Jenny.

Chris Scott, an expert with the society of human resource managers, said in today's environment employers and staff have to be able to recognize a shift in behavior than can become a threat.

"You have to be able to let someone know within your company that you see a change in behavior that has you worried," said Scott.

She said it should also be standard practice that if someone is fired the entire staff knows immediately.

"You need to immediately let others know so if they see that person they need to alert someone," said Scott, "so the area can be on high alert and sometimes we neglect to do that."

Aragona said he gives an employee a chance to improve before he fires him and in some cases it helps, but the thought of a potential threat is always near.

"I've had a couple times that someone has gotten real angry," said Aragona .