Source: Marianna Virtanen, Jane E. Ferrie, Archana Singh-Manoux, Martin J. Shipley, Jussi Vahtera, Michael G. Marmot, and Mika Kivimäki, # European Heart Journal, published online May 11, 2010
From the abstract:
Aims: To examine the association between overtime work and incident coronary heart disease (CHD) among middle-aged employees.
Conclusion: Overtime work is related to increased risk of incident CHD independently of conventional risk factors. These findings suggest that overtime work adversely affects coronary health.
Memo to boss: 11-hour days may be bad for you
Source: Ben Hirschler, Reuters, May 11, 2010