Apology letter to a colleague

Dear {Recipient’s Name},

I am sorry for my behaviour this morning. I did not mean to offend you when I mentioned that you take longer breaks than allowed. I just wanted to inform you as a friend in case you were not aware. I did not want you to get pointed out by the team lead.

I realized why you lost your calm. I should have spoken to you about this personally and not in front of other colleagues. I am sorry that I also lost my temper in the spur of the moment. There is no explanation for my behaviour. I just want you to know that I really regret my actions.

I know it has damaged our friendship and working relationship a little. However, I hope to find a way to fix this situation. Being teammates, we need to have a good working relationship between us to make our project a success.

I hope this letter would be of some help in initiating a conversation between us. Please accept my sincere apologies for my actions. I promise you that I will never behave in such a manner again.

Yours sincerely,

{Your Name}