No.
Maybe it depends on how strong you are to do them. So my answer is no it may not be safe.
Jurgis worked as a laborer in the meatpacking plant. His job involved strenuous and dangerous tasks such as lifting heavy carcasses, operating machinery, and working long hours in difficult conditions.
Its not dangerous, but it isn't right. It should take 2 hours rest at least.
Dangerous Hours was created in 1919.
Its not legal to get a job until you are fourteen in the US. But when you are 14, you cannot work more than four hours a day, and cannot do heavy lifting.
the woman can return home after a brief observation period. She may be instructed to rest for the first 24 hours and to avoid heavy lifting for two days
The duration of Dangerous Crossing is 1.25 hours.
The duration of Dangerous Ground is 1.58 hours.
There is nothing unhealthy about not eating for 3 hours.
The duration of The Heavy - film - is 1.7 hours.
The duration of Eating Out is 1.4 hours.
Dangerous Hours - 1919 was released on: USA: December 1919