Formal apology letter to boss is a letter sent quite common, since all of us who work make mistake, and when you realize you made mistake you should apologize. However writing apology letter to boss is a tricky and challenging task, because you have to decide what is proper for this letter.
One thing is sure, disregarding the violation you have made / caused, writing apology to your boss will help you to make things right in a long term, and restore the communication to the set before the infraction. Since not all mistakes are equally serious for a business, the time and effort you are going to invest in drafting apology letter to boss varies,
In the below we have provided you a sample formal apology letter to boss for a poor performance. Sending this letter to your supervisor may save your job, and therefore feel free to use this letter if necessary and adjust it to your business environment.
Dear Mr. [BOSS]
With this letter I hereby wish to apologize for my poor performance at work lately. I am aware that I have been arriving to work often late, failing to complete my work duly. For this I am truly sorry and I take full responsibility.
About 20 days ago my daughter was involved in an awful car accident and she had to be hospitalized for 3 weeks. While she is doing better now things have been very stressful between dealing with the doctors, the insurance provider and others (like family and friends). Now that my daughter has settled back in at home things could calm down hopefully. We have the help that we need for she while I am at work and I am ready to give commit myself to my duties fully. I will strive to do only my best work from this point forward.
I highly appreciate your understanding during this difficult time. I am grateful for your leniency over the past couple of weeks and I promise that you will not regret it. Please accept my most sincere apologies for my decreased performance during this time.