TL;DR. The offer letter is the headline document of every at-will hire. Big-law practice keeps it deliberately short — the IP and confidentiality terms live in the PIIA, the equity lives in the stock option grant, and the offer letter’s only job is to state title, start date, comp, benefits, at-will status, and the conditions precedent to employment.
This post is part of the Montague Entrepreneur Forms Library — a free, plain-English collection of the legal documents every startup needs between its first day and its Series A. Pillar: Hire the Team.
What this document actually does
The offer letter is the formal extension of an employment offer to a specific person. It’s the document the candidate signs when they accept. Well-drafted offer letters are short — often a single page, rarely more than two — because they deliberately push the substantive legal terms into other documents. The offer letter states seven things and nothing more: (1) the job title and who the person reports to; (2) the start date; (3) base compensation; (4) any bonus and the equity recommendation that will go to the board; (5) benefits eligibility; (6) at-will status with crystal-clear language; and (7) the conditions precedent to employment (I-9, background check, reference verification, and execution of the PIIA).
Everything else — severance, notice periods, "cause" definitions, non-competes, change-of-control acceleration — belongs in a separate document. For rank-and-file hires, that separate document usually doesn’t exist; the offer letter plus the PIIA is the entire package. For C-suite hires, the separate document is an Executive Employment Agreement.
When you’ll encounter it
Every time you hire an employee. The candidate has been interviewed, references have been checked, the founders have agreed on a comp package, and it’s time to put something in writing. The offer letter is the thing the candidate signs to accept, and the start date is the day they show up to work. The PIIA is attached as an exhibit and must be signed on or before the first day.
The narrative — why shorter is better
Big-law practice is to keep the offer letter ruthlessly short. Every sentence you add is a sentence the candidate’s lawyer (or the candidate themselves) can negotiate against. The long letter reads like a contract and invites a counter-proposal. The short letter reads like a formality and gets signed. More importantly, every promise made in the offer letter — even a casually-worded one — can undermine the at-will employment posture. A sentence like "we look forward to a long and successful relationship" is well-meaning and dangerous: in a wrongful-termination claim, that sentence can be offered as evidence that the employer promised something beyond at-will employment. Leave it out.
— Montague Law, Entrepreneur Forms Library
The levers
Lever 1 — At-will language
The offer letter must state, explicitly and unambiguously, that employment is at-will and that either the employee or the company may terminate the employment at any time, with or without cause, with or without notice. This language should appear twice: once in the body of the letter and once as a standalone paragraph above the signature line.
Lever 2 — Equity as a recommendation
The offer letter should describe the equity grant as a recommendation to the Board of Directors, not as a guaranteed grant. The Board must approve every stock option grant at a properly-held meeting or by written consent. Saying "you will receive 10,000 options" in an offer letter and then having the Board fail to approve the grant creates liability. Saying "management will recommend to the Board that you receive 10,000 options" is safe.
Lever 3 — Conditions precedent
Employment is contingent on (a) completion of I-9 verification, (b) a satisfactory background check, (c) verification of references, and (d) execution of the PIIA. Listing these as conditions precedent means that if any of them fail, the offer can be withdrawn without creating a wrongful-termination claim.
Lever 4 — No severance, no notice
Don’t promise severance in the offer letter. Don’t promise any notice period. Both are inconsistent with at-will employment and create a paper trail that courts can use to undermine an at-will defense. If severance is genuinely warranted (for an executive, for example), put it in an Executive Employment Agreement or a separate severance agreement — not in the offer letter.
The at-will clause
Your employment with the Company is at-will, meaning that either you or the Company may terminate the employment relationship at any time, with or without cause and with or without notice. Nothing in this letter or in any other document or statement shall limit the right of either party to terminate the employment relationship at-will. This at-will employment relationship may only be modified in a writing signed by you and an officer of the Company authorized by the Board of Directors.
This is the protective clause that makes the letter a safe offer. Note three things: (1) it’s crystal-clear that the relationship is at-will; (2) it overrides any other document or statement, which means offhand verbal promises during recruiting don’t modify the employment posture; and (3) it provides the only mechanism for modifying at-will status — a writing signed by an authorized officer — which protects the company from argument that emails, Slack messages, or offhand comments modified the relationship.
Traps for the unwary
- Promising long-term employment. Phrases like "for the next two years" or "through the product launch" undermine at-will.
- Embedded severance. Severance belongs in its own document.
- Equity without board approval. Present equity as a recommendation; the Board must approve the grant separately.
- Missing PIIA attachment. The PIIA should be attached to the offer letter and signed the same day.
- Conflicting job-offer documents. Don’t send a casual email saying one thing and a formal offer letter saying another. The email will be cited against you in any dispute.
How this fits into the founder journey
The offer letter is the workhorse document of team-building. You’ll send dozens of them over the life of the company. Keep them short, keep them consistent, and always pair them with the PIIA. For executives — C-suite hires with negotiated severance, change-of-control acceleration, and sometimes non-competes — upgrade to an Executive Employment Agreement. For everyone else, the short offer letter plus the PIIA is the entire package.
Get this reviewed by Montague Law
Working on a deal? Montague Law drafts, reviews, and customizes startup legal documents on a flat fee designed for founders — not at the hourly rates of the big firms whose work product this library is designed to match. If you want this form tailored to your company, or a second set of eyes before you sign, email John.
This post is for general information only and is not legal advice. No attorney-client relationship is formed by reading it. If you’re about to sign something that matters, talk to a lawyer — preferably one who’s seen at least a hundred of these.
