Need help drafting a job offer letter? If an offer letter is completed, one copy should be sent to Human Resources with the new hire forms.Complete Post-Arrival Check In e-form. 3. Offer Letter Contents: The offer letter should include the job title, duties, remuneration (salary, bonuses, perks), start date, and employment restrictions. Learn what to include in a job offer letter and use our ready made template. How do you politely decline a job offer, after an interview, if you don't believe the job is for you? I did this just on Friday. I'm excited about the prospect of you joining Carta ("The Company"). In the following pages, you will find details regarding your salary, equity, and benefits.