Resign because no leave approved
Dear Mr./Ms. Manager?s Name,
I am formally requesting a leave of absence of three months, starting from Date.
The reason is that, my family needs me at this time. My wife is in her last days of pregnancy and my father is seriously ill. They need me to be there for them.
In case of refusal of leave, I have to submit my resignation effective Date of Resignation.
I appreciate your prompt consideration in this matter.
cc: HR Manager