Form required of new employees to verify identity and employment eligibility can be filled out online and saved or printed. Mention following things in your mail: Sample Reply: Thank you so much for offering me the job.Employers in Massachusetts must complete Form I9, Employment Eligibility Verification. So about a week or two ago I posted here asking what happens if you turn down a job offer and how unemployment would find out. Hello Employer, Thank you for the offer of employment, I accept. Please let me know what next steps will be. The most efficient way is to complete the Notification form through your employer UI Online account. Are the terms of an offer letter enforceable? The question is how was the offer worded? We would need to determine whether you were an "employee at will" or had an enforceable contract.