In your acceptance letter, thank the hiring manager for the offer to work with the company. Indicate that you are happy to accept the terms of employment.Employment Offer Letter Instructions. Download Michigan Employment Acceptance Letter template, modify and send for signing using BoloForms Signature. Accept offers in good faith. Customarily, in the US, it is three days. Offer letters must be prepared to preserve at-will employment status unless the employer consciously decides otherwise. See Preserving At-Will Status. Get your foot in the door. Include a space where the potential employee can sign and date the letter to signify their acceptance.