Got the call from the LA personal Department and the lady told me I will receive the offer letter in 2 days and paperwork to fill-up. If you have accepted the offer letter then the following points MUST HAVE been mentioned in that letter: 1.Your joining date 2. Learn to write an effective offer letter acceptance mail with this comprehensive guide. The key here is to have a line ready, such as, "Thank you so much for the offer. I am so excited for this opportunity. Knowing how to accept a job offer is key. Thank the recruiter, review the offer and follow up with questions and a counter offer before accepting the offer. The short answer is yes, you can decline the offer. I suspect that the offer letter says that when you become employed, you would be an employee at will.