A spokesman for JPMorgan declined to comment. The bank has 260,000 employees worldwide, according to its website.
Centers for Disease Control and Prevention data on "sales representatives for financial and business services" cited by Fortune—the closest Wall Street grouping available and broader than the title would indicate—showed that members of the group are 39 percent more likely to kill themselves than the workforce as a whole. That compares with 54 percent for lawyers and 97 percent for physicians.
Suicide was the 10th leading cause of death for all ages in 2010, according to a separate CDC report. There were 38,364 suicides in 2010 in the U.S., an average of 105 each day.
Alexandra Michel, who teaches at the University of Pennsylvania's Graduate School of Education, said bank employees are much more likely to become depressed after four or five years of intense work. She also said back-office employees sometimes had an inferiority complex because their hard work did not earn the same power and prestige as front-office workers, such as investment bankers.
"In the back office you work at lot and you don't have status," Michel said. "We know from research that a lack of status induces helplessness and exacerbates stress."
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Michael Santoro, a professor of business ethics at Rutgers Business School, cautioned against drawing any conclusions from the latest suicide.
"We have no way of knowing what is behind this and what role if any his working at a bank had to do with what happened," Santoro said.