At Will Employment Exceptions | Know Your Worker Rights

For European companies expanding into the United States, few concepts cause more confusion than “at-will employment.” The phrase sounds alarming to anyone used to UK, German, or Dutch frameworks. In those markets, dismissal usually requires notice periods, valid reasons, and formal procedures.

At Foothold America, we have spent years helping international companies, especially from the UK, Germany, the Netherlands, and the Nordics, hire and manage US employees. Few topics generate as many questions as at-will employment. This guide is the answer we give clients when they want to understand what at-will actually means in 2026, where it stops protecting employers, and what to document to stay on the right side of state and federal law.

While 49 US states and the District of Columbia operate under at-will principles, almost every one of them recognises legal exceptions that protect workers from unfair dismissal. Some exceptions are sweeping. Others are narrow. Federal law layers another set of protections on top. For the broader foundation, see our introduction to at-will employment for foreign companies.

What is at-will employment?

At-will employment is a default rule that lets either the employer or the employee end the working relationship at any time, for any lawful reason, without notice. No severance is required by law in most situations. No formal warning process is mandated by default.

The doctrine is reciprocal. An employee can quit on Monday morning without explanation. An employer can dismiss the same employee on Tuesday afternoon, provided the reason is not illegal. Neither party owes the other a notice period unless a contract or state law says otherwise.

For European employers used to statutory protections, this flexibility is the headline feature of US hiring. In our experience, it is also the source of the most expensive misunderstandings. International companies often arrive expecting US termination to be effortless, only to discover the exceptions, the state-specific overlays, and the federal anti-discrimination rules that quietly limit what at-will actually permits.

Who is an at-will employee?

In most US states, every employee is presumed to be at will unless something specific says otherwise. The presumption usually appears in the offer letter or employee handbook, often without using the phrase “at will” explicitly.

Wording like “employment may be terminated at any time by either party” carries the same legal weight as the formal term. Some employers ask new hires to sign a separate document confirming the at-will relationship. We always recommend that international clients build this language correctly into their US employment letters and onboarding paperwork from day one. The cost of fixing handbook problems retroactively is many times the cost of getting them right at the start.

If you are setting up a US entity for the first time, this is the moment to get the paperwork right rather than fix it later.

Who is not an at-will employee?

Several categories of US workers fall outside the at-will doctrine entirely.

Employees with a written employment contract. If your offer letter or contract specifies a fixed term, or limits dismissal to “for cause” reasons, the contract overrides the default at-will rule. The employer can only terminate for the reasons the contract permits.

Employees covered by a collective bargaining agreement. Union contracts typically include a dismissal process, often requiring documented cause, progressive discipline, and grievance procedures. Most unionised employees cannot be fired with the speed an at-will arrangement allows.

Public sector employees with civil service protections. Many government workers have statutory rights that effectively require cause for dismissal, independent of the at-will doctrine.

Independent contractors. Contractors are not employees at all and operate under different legal rules, although misclassifying a worker as a contractor when they should be an employee creates its own exposure. Our US employee classification guide covers where the lines fall.

Montana employees past their probationary period. Montana is the only US state that has rejected pure at-will employment by statute. We cover this in detail below.

The three common law exceptions

US courts have developed three main exceptions to the at-will doctrine. Each operates differently. The map of which state recognises which is uneven, and we walk every client through this map before they make their first US hire.

1. The public policy exception

This is the most widely recognised exception. It bars employers from firing workers for reasons that violate established public policy.

Common examples include firing someone for filing a workers’ compensation claim, refusing to commit an illegal act, performing jury duty, reporting safety violations, or serving in the military reserves. Roughly 42 states and the District of Columbia recognise this exception in some form.

The eight states that do not recognise the public policy exception are Alabama, Florida, Georgia, Louisiana, Maine, Nebraska, New York, and Rhode Island. Several of these states have statutes that cover similar ground through different legal routes. Maine and New York, for example, have whistleblower laws that protect employees a public policy claim would protect elsewhere.

2. The implied contract exception

This exception treats employer conduct, written policies, or verbal assurances as creating an implied agreement that limits the right to terminate. A handbook stating that employees will only be dismissed “for cause” can create one. A manager promising long-term security can sometimes create one too.

Around 36 to 41 states plus DC recognise implied contract claims, depending on how the count is drawn. The burden of proof falls on the employee. Courts look at the totality of the employment relationship, including handbooks, performance reviews, and oral statements.

A scenario we see often. A European SaaS company we worked with had used its UK-style handbook when hiring its first US engineer in Massachusetts. The handbook included a section on “progressive discipline, including verbal and written warnings before any final review.” When the relationship deteriorated 18 months in, the company moved to terminate immediately. The employee argued the handbook had created an implied contract requiring the documented process to be followed first. The dispute settled out of court, but it cost the company a six-figure payment plus several months of legal work. A single sentence in the offer letter and a US-specific handbook drafted at hire would have prevented the entire situation.

This is why handbook language matters so much. Poorly drafted documents can quietly strip away an employer’s at-will defence without anyone noticing.

3. The covenant of good faith and fair dealing

This is the narrowest of the three but the broadest in application where it applies. It prohibits terminations made in bad faith or with malicious intent.

The exception is currently recognised in roughly 11 states. The list typically includes Alabama, Alaska, Arizona, California, Delaware, Idaho, Massachusetts, Montana, Nebraska, Utah, and Wyoming, with some sources adding Nevada.

In practice, this exception is used to challenge terminations designed to deprive employees of earned benefits. A classic example is firing a sales representative the week before a large commission vests, or dismissing a long-tenured employee to avoid pension obligations.

Florida, Georgia, Louisiana, and Rhode Island

Four states stand out as the strictest interpreters of at-will employment. Florida, Georgia, Louisiana, and Rhode Island recognise none of the three common law exceptions in their pure form.

Employers in these states still face federal anti-discrimination and retaliation rules. State-specific whistleblower protections also apply. Florida law, for instance, protects employees who object to illegal activity, refuse to participate in it, or provide information to government agents.

For a European business hiring in any of these four states, the practical legal risk on termination is lower than in California or Massachusetts. But “lower” is not “zero,” and federal protections still bite hard. Reputational risk also remains, particularly for companies trying to build a brand presence in the US market.

Montana: the only state that is not truly at-will

Montana is the only US state that has rejected pure at-will employment by statute. Under the Wrongful Discharge from Employment Act (WDEA), private employers must have “good cause” to terminate any employee who has completed the probationary period.

The default probationary period was extended from six months to 12 months under HB 254, signed in 2021. Employers can extend that period in writing to a maximum of 18 months.

Good cause is defined in the statute. It covers failure to perform job duties, material or repeated violation of written policies, disruption of operations, and other legitimate business reasons the employer determines while exercising reasonable business judgment.

Montana courts have held that the WDEA can apply even to out-of-state employers if the employee performs most of their work in Montana. Choice of law provisions in employment contracts may not always override it. If you have a remote employee based in Bozeman, Montana law is likely to govern that relationship.

“The state where you place your first US hire shapes everything that follows,” says Laurie Spicer, Director of US Expansion at Foothold America. “Clients often pick California for the talent pool, then realise the protections layered on top of at-will employment make terminations more involved than they expected. Knowing the state map before you hire saves a lot of friction later.”

Federal protections that apply everywhere

No matter which state you hire in, federal law overlays a baseline of protections that has nothing to do with at-will doctrine. Termination decisions that violate these laws are unlawful in every US state and territory, including the four strict at-will states above.

Federal law prohibits termination on the basis of:

• Race or colour

• National origin

• Religion

• Sex (including pregnancy, sexual orientation, and gender identity since the Supreme Court’s 2020 Bostock decision)

• Age (40 and older, under the ADEA)

• Disability

• Genetic information

• Military service or veteran status

• Citizenship status (with limited exceptions)

The main federal statutes behind these protections are Title VII of the Civil Rights Act, the Age Discrimination in Employment Act, the Americans with Disabilities Act, the Equal Pay Act, the Genetic Information Nondiscrimination Act, and USERRA for military service.

Federal whistleblower protections under Sarbanes-Oxley, Dodd-Frank, and various agency-specific statutes also apply nationwide. The Occupational Safety and Health Act protects employees who report unsafe conditions. The Family and Medical Leave Act protects employees taking qualified leave.

Retaliation is also prohibited under all of these statutes. An employer cannot legally fire an employee for reporting discrimination, filing a complaint, or participating in an investigation. We tell every client that retaliation claims are now more common than the underlying discrimination claims they relate to, and arguably more dangerous because they can stand even when the original complaint fails.

State-specific statutory protections

Beyond the common law exceptions, many states have passed statutes protecting employees from termination for specific reasons. These vary widely and are often overlooked by international employers focused on the headline at-will rule.

Examples include lawful off-duty conduct (Colorado, New York, North Dakota, and several others), use of legal products like tobacco or cannabis off the clock, political affiliation or activity, jury duty service, military service, and protected leaves of absence under state family leave laws.

California stands out for the breadth of its statutory protections, covering everything from medical marijuana use to caregiver and family status. New York and Massachusetts also layer significant protections on top of common law exceptions. Illinois’s Right to Privacy in the Workplace Act protects employees from termination based on lawful off-duty activities, including legal use of products like alcohol or tobacco outside work hours.

If you are hiring across multiple states, do not assume one handbook policy fits all. State-by-state review is essential.

What counts as a lawful reason for termination?

In a true at-will state, employers can terminate for almost any reason that does not fall foul of the exceptions above. Reasons can include poor performance, business restructuring, role redundancy, cultural fit, or even reasons that seem trivial.

In theory, an employer could fire an employee for supporting the wrong football team. In practice, very few employers do anything that arbitrary because the cost of replacing trained talent is too high. The doctrine permits more than most employers ever use.

What matters legally is not whether the reason is fair, but whether it is unlawful under federal law, state common law exceptions, or specific statutory protections. The question shifts from “was this a good reason?” to “was this a prohibited reason?”

What this means for European employers

For UK, German, Dutch, and Nordic businesses building US teams, the practical reality is this. At-will employment offers more flexibility than European frameworks, but it is not the wild west. The exceptions are real, and the documentation needed to defend a termination is substantial.

“European clients often arrive expecting US hiring and firing to feel purely transactional,” says Angelique Soulet-Bangurah, PHR, Head of EOR Services at Foothold America. “The truth is that good documentation, consistent handbook language, and proper performance management protect both sides. When clients lean into those practices, terminations rarely become disputes.”

Foothold America’s Employer of Record service handles state compliance, handbook language, and termination documentation on behalf of international clients. That removes much of the risk that comes from misreading state-specific rules.

For companies with their own US entity, our PEO+ Cross-Border Support service provides the same backbone of HR compliance while keeping operational control with the parent company.

Practical steps to protect your business

These are the habits we work into every client onboarding, and they separate well-protected employers from exposed ones.

Draft offer letters and handbooks that confirm at-will status explicitly in states where it applies. Avoid promises of long-term employment, “permanent” roles, or termination “only for cause” unless that is genuinely what you intend. Include a clear at-will disclaimer stating that nothing in the handbook alters the at-will relationship.

Document performance issues in writing as they arise. A paper trail showing legitimate, non-discriminatory reasons for a termination is the strongest defence against a wrongful discharge claim. We have seen verbal warnings without records lose cases that documented warnings would have won easily.

Apply termination decisions consistently across employees. Disparate treatment of similarly situated workers is one of the most common ways at-will protection unravels under scrutiny. If two employees do the same thing and only one is dismissed, expect the question of why.

Review state-specific protections before terminating anyone in California, New York, Massachusetts, Montana, Illinois, or any state with strong common law exceptions. What feels routine in Texas or Florida may carry significant risk elsewhere.

The cultural piece

Beyond the legal mechanics, there is a cultural layer that catches many international employers off guard. American workers often expect performance feedback, clear expectations, and at least some form of process before dismissal. Most expect this even where the law does not strictly require it.

“What clients regret most after a difficult termination is not the legal exposure but the cultural one,” says Geanice Barganier, Chief Client Officer at Foothold America. “American employees expect feedback, conversations, and a chance to improve before being let go, even where state law does not require it. Companies that build that habit from day one rarely have to manage messy exits.”

Skipping these steps may be legal in most states. It is rarely wise. Reputation, employee morale, and the cost of replacing talent all argue for treating terminations with care, not just bare compliance.

Our Cultural Intelligence Advisory service helps European businesses navigate the gap between what US law permits and what US workplaces expect.

In summary

At-will employment is the default in 49 US states and DC, but it is rarely the full picture. Public policy, implied contract, and good faith exceptions cover most of the country in varying combinations. Montana stands apart with its WDEA. Federal anti-discrimination and retaliation laws apply everywhere.

“Most international clients come to us thinking US employment law is either much more flexible or much more dangerous than it actually is,” says Joanne, President and CEO of Foothold America. “The truth sits in the middle, and the middle is where good planning makes the difference. The right strategic question is rarely whether you can terminate someone but whether you set up the relationship properly in the first place.”

For European companies, the right approach is not to fear at-will employment but to respect its limits. Build a documentation habit. Train US managers on consistent termination processes. Lean on partners who understand the state-by-state map.

If you are building or scaling a US team and want a clear picture of compliance across the states you are hiring in, our team can walk you through what applies, what does not, and how to set up your hiring infrastructure to stay protected. Get in touch to discuss your specific situation.

Editorial process

This article was researched against current state and federal statutes, recent case law, and 2025 to 2026 regulatory updates. All factual claims have been verified against primary sources including the US Equal Employment Opportunity Commission, the US Department of Labor, the Montana Department of Labor and Industry, and state-level corporate and labour statutes. Practitioner perspectives reflect direct experience advising international clients on US employment matters.


Sources

• US Equal Employment Opportunity Commission (eeoc.gov)

• US Department of Labor (dol.gov)

• Montana Code Annotated, §§ 39-2-901 through 39-2-915 (Wrongful Discharge from Employment Act)

• Bostock v. Clayton County, 590 U.S. 644 (2020)

• 29 U.S.C. § 2100 et seq. (WARN Act)

• Illinois Compiled Statutes, 820 ILCS 55 (Right to Privacy in the Workplace Act)

Legal disclaimer

This article provides general information about US employment law and is intended for educational purposes only. It is not legal advice and does not establish an attorney-client relationship. US state and federal employment law changes frequently and varies significantly by jurisdiction. Before making any termination, hiring, or employment policy decision, consult qualified US employment counsel licensed in the relevant state. Foothold America provides employment services and operational support to international companies, not legal advice.