Basically you're expected to accept an offer and join the work without having any written proof of appointment and confirmed agreement on your payout. Over two weeks later and 3 days into training, HR tells me they "accidentally" offered me the role with a salary and it would need to be changed to hourly. No.The offer letter should include information about how you will be paid. Need help drafting a job offer letter? The following tips will help you prepare simple and effective offer letters that work best for your company's operating style and structure. If it's an official part of your compensation it should be in your offer letter.