An example phrase to use would be "Hello. Explain that you accepted a job offer, that the acceptance was in writing, and say who sent you the offer.A sample letter offering a job contingent upon the results of a background check or other criteria. Read on to learn why and how to write an employee offer letter. Download Florida Employment Rejection Letter template, modify and send for signing using BoloForms Signature. If a company sends a candidate a job offer letter what is a reasonable amount of time to expect the candidate to reply? I accepted the offer a day later and signed the offer letter. I have not heard back from them in 3 weeks. As a general rule, an offer may be rescindedits just an offer, not a contractin fact, it may be withdrawn after acceptance too! However, the employer should be mindful of the language used in the offer letter, or it may be construed as an employment contract or agreement.