The warning came in the wake of the resignation of Greg Smith, an executive from Goldman Sachs who wrote a scathing editorial about his employer published in The New York Times on his last day at work.
Smith said Goldman Sachs, under Chief Executive Officer Lloyd Blankfein and President Gary Cohn, had lost its "moral fiber," saying the company no longer helps its clients make good financial decisions but instead uses their money to make Goldman Sachs the highest profit.
"Smith's approach, while commendable for tackling very real issues of profits versus people, should not serve as a model for the average worker on how to leave his or her position," CEO John Challenger said in a statement.
"It is important to remember that most workers do not have the benefit of Smith's former high-level position and salary," Challenger said, advising most employees to exit "quietly and not burn any bridges."
"Loose talk may be the difference between a new job and continued unemployment," Challenger said.
Notable deaths of 2014 [PHOTOS]