Almost one-third of American workers are considering leaving their jobs, with younger workers most likely to be looking to quit, according to the human resources consultant Mercer LLC.

The survey of 2,400 U.S. workers found that 32 percent are “seriously considering” leaving their organizations, up from 23 percent in 2005. Another 21 percent said they view their employers unfavorably and don’t feel engaged at work, though they don’t want to leave, Bloomberg said.

Dissatisfaction is growing as workers think they are getting less out of their employment. Workers satisfied with base pay dropped to 53 percent from 58 percent in 2005, according to Mercer. Sixty-eight percent of employees rate their overall benefits as good or very good, down from 76 percent.

“Often, a change in mood or sentiment is not spotted until it becomes a full-blown issue,” Pete Foley, a principal at Mercer, said in a statement. “Employers must periodically take the pulse of their own employees to identify their specific areas of concern and link employee opinion to outcomes such as productivity and retention.”

Among employees 25 to 34, 40 percent are contemplating leaving their jobs and, among employees 24 and younger, the figure is 44 percent, Mercer said.