Subject: Request to be punctual

Dear [Colleague’s Name],

I hope this email finds you well. I am writing to request your kind attention to the importance of punctuality at work.

As you know, being on time for work is crucial to ensuring that we can begin our tasks promptly and meet our deadlines. Lately, I have noticed that you have been arriving late to work on a frequent basis, and this has caused some delays in our team's progress.

I understand that unforeseen circumstances can sometimes arise, but I would kindly request that you make every effort to arrive on time in the future. If you need any support from our team or me to make this possible, please do not hesitate to let us know.

Thank you for your attention to this matter, and I look forward to your continued contributions to our team.

Best regards,
[Your Name]
Scrivi un'e-mail a un collega chiedendogli gentilmente di non arrivare in ritardo al lavoro.