This example resignation letter is perfect for when an employee must leave to take care of a relative or friend.
January 25, 2018
(Employer Name)
(Company)
(Address)
Dear (Employer Name),
It is with great regret that I submit my resignation, effective (date). I wish that I could stay and continue the fulfilling and important work I have done here at (Company), but I am needed at home to take care of my ailing (relative). I so appreciate all that you and my coworkers have done for me, and I sincerely hope that I might one day be able to return.
Thank you so much for your understanding and consideration.
Sincerely,
Name