In a massive study spanning 194 countries and accounting for billions of people, the World Health Organization (WHO) has compiled incredible evidence linking as many as 750,000 deaths per year to overwork. Here’s the scary part: The WHO defines “overwork” as spending more than 55 hours per week on the job. That makes it a very serious issue for employees in industries that experience crunch such as STEM and gaming, and for entrepreneurs who think the key to success is putting in long hours. Per the study: In 2016, 488 million people (95% uncertainty range: 472–503 million), or 8.9% (8.6–9.1) of…

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