Is there a rule on the construction site that you can punch in?

The law does not stipulate that enterprises must punch in at work. Punching in at work is a measure and regulation of enterprise's independent management. Whether it is necessary to punch in and out of work depends entirely on the upper management of the enterprise, that is, the maker of enterprise management. However, the company does not stipulate the designated working hours. Regardless of the actual working hours, wages are paid according to the agreed working hours. So when workers use what items to punch in and take pictures, I think we can see if the company needs it.