Apology Letters to Waiters

Dear {Recipient},

I'm sorry for {mistake}. I know how {frustrating/upsetting/disappointing/etc.} this is for you and I deeply
apologize for the trouble.

It was an honest mistake, but I take full responsibility for my actions and plan to make amends by {plan}. I
assure you that I've taken the necessary steps to make sure this doesn't happen again. Please let me know if there's anything else I can do to fix my mistake.

Sincerely,

{Your Name}

Dear {Recipient},

I'm sorry I didn't leave you a tip after dining at {name of restaurant} this past {day of the week}.

Please know that it was a complete oversight on my part and not a reflection of your service at all. The service you provided was beyond my expectations and I had a wonderful experience at {name of restaurant} thanks to you. Unfortunately, I was in such a hurry to leave that I forgot to leave a tip—and I only realized it once I was already {home/back at the office}.

Enclosed is a check for {dollar amount} to make it up to you. I have also written a letter to your manager to let {him/her} know about your excellent work ethic.

Kind regards,
{Your Name}