Format Of Employment Contract Extension

I have been working in HR and am searching for a format of employment contract extension of staffs. An employee is already finished his contract and am trying to renew it for another one/two months until he is considered as regular staff. Pls provide me the same in urgent basis.
Thanks for everyone for helping me...
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Hi, I saw your post re same matter. I would like to have some ideas which can improve my skills as well in providing letter/notice for contract extension. I would compare it to what i am using.
Hope you could give me one or two samples. My email add is annalizareyes0824@gmail.com