[These are sample application letter format for renewal of work visa in UK, Europe, UAE, India, United States and various countries. You should show appropriate cause with formal manner. You can modify this format as your requirement.]
Date…
Head of Department…
Embassy Name…
EmbassyAddress…
Sub: Request Letter for Work Visa Renewal
Dear Sir,
I’m (Country name) nationalist living in your country from last three/five (or more) years, working as a (job type) in (company name/department name) but now sir my visa has been expired. I have a contract with (Company name) for five-year (or more). So sir its humble request to you kindly extends my visa for more two years. (show your actual problem and situation). So I will serve to the (Company name) for more two years according to contract.
I shall be thankful two you.
Yours Sincerely,
Name…
Address…
Contact no and signature…