Apology Letters for Laziness

Dear {Recipient},

I'm sorry I failed to {file the records/enter the data/schedule the appointment/etc.} that you requested earlier. I didn't mean to be negligent, but {reason} prevented me from completing the task.

I'm not trying to come up with an excuse, though. Please let me know what I can do to sort this out. I'm willing to {stay back after office hours/reach out to the client/etc.}.

Sincerely,
{Your Name}

Dear {Recipient},

I'm sorry I didn't submit my homework on {topic} which was due on {date}.

The day before the deadline, {reason for not completing homework}. I was actually already halfway through my assignment; however, since {elaborate on reason}, I was unable to finish it on time.

I hope you can grant me an extension and still allow me to submit my homework. Thank you for your kind understanding.

Sincerely,
{Your Name}

Dear {Recipient},

I apologize for failing to show up to my scheduled interview on {day of the week}. I know this reflects poorly on me as a job candidate, but I assure you I wouldn't have missed such an important appointment unless there was a very good reason.

Unfortunately, {reason for missing interview}, thus I had no choice but to miss my interview. I hope you'll consider rescheduling me. I'm really interested in the position as {reason for interest}.

Thank you for your kind understanding.

Sincerely,
{Your Name}