An intern died after reportedly spending long hours of work. Legislations specify certain number of hours of work per day, per week, etc and limits on overtime hours also. However, these rules are mostly applied to factory workers and I am not sure whether they are applied to supervisors and blue collared employees in the same organization.
This leads to spending long hours at work place by these people, either by force, or even if there is no requirement, may be to learn the work, or to get attention of higher authorities. This type of work is not possible forever. If somebody joins as trainee/apprentice and even for regular employees, managements of any establishment should strictly enforce working hours, instead of being a passive onlooker. Only then, these types of incidents can be avoided at the work place. It is all in work culture which is guided by safety culture of the organization.