Please help me write an email to my boss
I want to send an email to my boss for a replacement staff to handle my job during my one month leave

Dear Mr ...
As you know I am taking a months' leave from .... to .....Due to my current work load, I think it will necessary for a temporary worker to take over from me whilst I am away. Please let me know your thoughts on this matter.
Regard/,sincerely
Lalit