Cohort study: long working hours (more than 55 h/week) linked to increased risk of recurrent coronary events.

Long Working Hours and Risk of Recurrent Coronary Events – Journal of the American College of Cardiology (link to abstract – $ for full-text)

Commentaries: Working long hours may increase odds of second heart attack – American College of Cardiology AND Recurrent CHD Risk Up With Long Working Hours After First MI – HealthDay AND Longer Work Hours After MI Tied to Higher Risk of Recurrent Events – TCTMD