If you want to turn down a job offer, then you should send a formal letter to a company declining a job offer. In the letter you should indicate that you appreciate the offer, and briefly state the reasons for declining a job. The letter should be addressed to person who offered you the job, and sent within timeframe employer envisaged for your response (usually up to one week). Regarding possible reasons for declining a job offer, you might explain that you accepted another offer, or that you have decided it was best to stay at your current job. Whatever the case, keep your explanation brief without unnecessary details. Formal letter to decline job offer template Dear Ms. / Mr. [Last Name], Thank you for