With humble regard, I would like to inform that I am _____ (name) working your company as _____ designation) having employee code _______ (employee code).
I am writing this email to bring to your kind attention that I am unable to attend the office on __/__/____ (date). The reason of absence from the work is _________ (mention reason for leave).
I hereby request you to kindly approve my leave request and if you need to contact me, please feel free to contact me at any time. Thank you for your kind support. I am waiting for your approval in this regard.
______(Employee ID Number),