According to the rules of our company, every member of staff is obliged to be at work on time.
I have been informed that you arrive late for work twice a weekday on average.
The situation is unacceptable.
Your habitual lateness disorganizes work of our team, and arouses the irritation of the rest of staff.
I suggest you should work after worktime to make up for the backlog.
You also have the obligation to inform superiors of being late beforehand.
It's necessary to organize work and tasks of all staff in our company.
Many thanks for your co-operation.