Dundes and Marx (2006) reported that 74 percent of studentworkers believed that
employment forced them to become more efficient. However, 64 percent reported
that employment also increased their level of stress.
Many sources concluded that working had little or no effect on GPA. Following an
indepth study of the topic, included in the Journal of Human Resources, Ehrenberg
and Sherman (1987) stated, “We do not find any strong evidence…that hours of work
during the academic year in the range that students worked significantly reduced
grade point averages.”