Genius: Working day is the time you work. And if the working day begins at 9:00, then you should come a little earlier: while you scratch your ass, pour tea, turn on the computer, etc.

You are no less brilliant: read the TC of the Russian Federation and try to find an indication there that the performance of preparatory operations for work, for example, the running of a computer and programs necessary to perform their duties is not included in working hours. I doubt what you will find. However, this approach is typical for companies where wages are issued in envelopes... But this is another story...