> Caution: The mentioned amount of hours is not advisable for people working on someone else's business for illusory stock options, with no payment for overtime. There's also no point in going beyond this number because working over 50 hours a week actually decreases productivity. Life should come first in the "work-life balance."

Great disclaimer in the article. The only problem is that many employers will be quite happy with people working 50+ hours per week. It's up to the employee to not let an employer take that much advantage of them (this includes having enough savings to be able to put in notice at the job at any point, assuming no contract or law would prevent it). The current landscape of the technology field, while lucrative for an employee, especially in the United States, is tremendously skewed toward the business where many employers see high turn-around as the rule, and no longer the exception, leading the employer to expect employees to work such high numbers of hours.

If a person likes working 200 hours per month, I wish them all the best and hope they are hourly-paid. Being salary-paid and having a family means I will continue to limit myself to 40 hours per week working for someone else. At a point where I work for myself, then, of course, that number may change.