Explain that you accepted a job offer, that the acceptance was in writing, and say who sent you the offer. An example phrase to use would be "Hello.I am writing to confirm my acceptance of your employment offer on April 20 and to tell you how delighted I am to be joining XYZ Corporation in Chicago. I eagerly look forward to commencing my job responsibilities and contributing to the growth of the company. I have not heard back from them in 3 weeks. Have sent 2 emails and called twice since then but no response. Writing a job acceptance letter is a sign of professionalism. Check out these job acceptance letter samples to write a perfect acceptance letter To create an applicant account, go to Career Pages website and click on Sign In. Under the Sign In button, click Don't have an account? Joint venture bidding is permissible.