(Daily Finance) — We’re all aware of the painful psychological impact unemployment can have on a person. Diminished self esteem, anxiety, depression and lack of sleep are among the mental symptoms that can also affect physical health, as researchers at Washington and Lee University reported in 2008. In a 2009 study, The Anguish of Unemployment, Rutgers University researchers even quantified the psychological trauma of job loss. But a new study reveals something that may surprise some victims of this recession: A bad job can be as harmful to your mental health as no job at all, and in fact, it can be even worse. “Because employment is associated with better mental health than unemployment, policy has focused on the risk posed by joblessness, although there is evidence that poor quality jobs can erode mental health,” wrote the authors of the study published last week online in the journal Occupational and Environmental Medicine.