For the most part in the US, limits on work hours only exist where safety is an issue: truck drivers, people who work on power lines, etc.
Note in this case, Dorsey is working for two different companies, and in at least one of them he's a founding executive. Even in the EU, a founding executive might not be covered by work hour restrictions that apply to his employees.
Note in this case, Dorsey is working for two different companies, and in at least one of them he's a founding executive. Even in the EU, a founding executive might not be covered by work hour restrictions that apply to his employees.