A simple "thank you for the offer" can go a long way. I finally received the confirmation letter yesterday.It turned out the department pushed back the hiring day for 2 weeks. The simple answer is no, if a company offers you a job verbally they are not required to put the offer in writing. Here is a sample acceptance letter that you would print out and send through the mail. Be sure to print on quality white paper. Explain that you accepted a job offer, that the acceptance was in writing, and say who sent you the offer. In this blog, we will discuss how to write an offer letter acceptance mail as well as provide you examples and the proper format to use when writing one. Contact the employer who has made you the offer and ask if they are prepared and willing to extend the offer acceptance deadline, if needed. There is no involuntary servitude in California.