In a normal organization, the working day begins noticeably earlier than any of the employees may need. For example, if the store opens at 8 a.m., the staff will arrive at 7:30 a.m. Therefore, delays within 15 minutes have no effect at all. Regular delays are fined so that it does not enter the system, the rest does not care anyone.
In a normal organization there is an excess of personnel, taking into account holidays, holidays and hospitals (an average of 10 weeks out of 52 people are not working, i.e. The staff should be increased by 25%, now we have a department of 4 replacement workers and their chief, so the chief of the department leaves with the subordinate for a month or two a year, the rest of the time someone replaces in the post).
The excess of personnel also determines interchangeability. If someone goes out to eat, smoke or go to the toilet, it does not affect production. But if someone is constantly out - in the collective they will not love him.
Of course there are strange personalities everywhere that don’t work at all. But here they just go to work 30 minutes before the start, so that no one notices an extra time. Send them to the general personally if necessary. And they do not smoke.