Dangerous alcohol consumption, which can lead to increased risk of liver disease, cancer, stroke, coronary disease and mental disorders, is considered as more than 21 units of alcohol per week for men and more than 14 units per week for women.
Despite the stereotype of "white collar" workers unwinding with a glass of wine after a hard day, the study found that middle-class drinkers tended to be over-represented in most studies at the expense of manual and shift workers.
In fact, the BMJ study showed the relationship between alcohol consumption and longer working hours isn't affected by age, gender or socioeconomic status. Instead it found that shift patterns and the spread of working hours are more important factors in tracking risky alcohol use.
Regardless of economic status, the research team said the analysis "supports the longstanding suspicion that among workers subjected to long working hours, alcohol can seem like a fast acting and effective way to dull work-related aches and pains and smooth the transition between work life and home life".
According to lead author Cassandra Okechukwu, an assistant professor at Harvard School of Public Health, this has major implications for working time rules.
She said: "Given mounting pressure to exclude an increasing proportion of workers from current standards that limit working hours in Europe and other developed countries, long working hours is an exposure that we cannot afford to ignore."
- Independent