Apologize for having had to decline the offer. The quicker you respond, the quicker the employer can fill the role.Be straightforward, be honest. A sample letter declining a job offer after accepting it can take many forms, but as a rule you should keep it short, to the point, and completely professional. Learn how to politely turn down a job offer with these tips and examples. Maintain a good relationship with the company while declining the offer. What should you include in a job rejection letter? The professional email above can be pretty formal, so here's an example of how to respectfully decline a job offer. Thank you for the offer that you extended for a position as a research assistant in the Department of Interior Extension Library. Workers must have "good cause" for turning down a job offer while claiming unemployment benefits.