Back to Blog
Law & Compliance

At-Will Employment: What HR Professionals Must Understand

Understand the at-will employment doctrine, its exceptions, and practical implications for HR professionals preparing for the SHRM certification exam.

May 5, 2026

What Is At-Will Employment?

At-will employment is the default employment relationship in the United States. Under this doctrine, either the employer or the employee can terminate the employment relationship at any time, for any reason (or no reason at all), with or without notice. The only limitation is that the reason cannot be an illegal one.

For HR professionals preparing for the SHRM-CP or SHRM-SCP exam, understanding at-will employment and its exceptions is fundamental. This doctrine underlies much of U.S. employment law, and exam questions frequently test your ability to distinguish between lawful at-will terminations and those that violate statutory or common law protections.

Every state except Montana follows the at-will doctrine by default. Montana's Wrongful Discharge from Employment Act requires "good cause" for termination after a probationary period. Even in at-will states, however, the doctrine is subject to important exceptions.

Exceptions to At-Will Employment

Three major categories of exceptions limit the at-will doctrine:

1. Statutory Exceptions:

Federal and state employment statutes prohibit termination for specific reasons, including:

  • Discrimination based on protected characteristics (race, color, religion, sex, national origin, age, disability, genetic information)
  • Retaliation for filing a complaint, participating in an investigation, or exercising a legal right
  • Union activity or other protected concerted activity under the NLRA
  • Taking protected leave under the FMLA or similar state laws
  • Exercising rights under OSHA, workers' compensation, or other workplace protection statutes

2. Common Law Exceptions (Judicially Created):

  • Public policy exception: Recognized in most states, this prevents employers from terminating employees for reasons that violate a clear public policy mandate. Examples include firing an employee for refusing to commit an illegal act, filing a workers' compensation claim, serving on a jury, or reporting illegal conduct (whistleblowing).
  • Implied contract exception: Recognized in many states, this arises when employer statements or actions create an implied promise of continued employment. Sources can include employee handbooks, policy manuals, verbal assurances, or a pattern of progressive discipline.
  • Implied covenant of good faith and fair dealing: Recognized in a minority of states, this requires that termination decisions not be made in bad faith or with malicious intent. For example, firing a long-term employee just before their pension vests may violate this covenant.

3. Contractual Limitations:

Express employment contracts, collective bargaining agreements, and individual employment agreements can override the at-will default by specifying the terms and conditions under which employment can be terminated.

Protecting At-Will Status

HR professionals should take deliberate steps to preserve at-will status when that is the organization's intent:

  • Include clear at-will disclaimers in offer letters, employee handbooks, and application forms.
  • Avoid language in job postings, handbooks, or communications that could imply guaranteed employment (such as "permanent position" or "career opportunity").
  • Require employees to sign acknowledgment forms confirming their at-will status.
  • Train managers to avoid making verbal promises about job security or continued employment.
  • Ensure that progressive discipline policies include disclaimers stating they are guidelines, not guarantees of a specific process.

Practical Implications for HR

While at-will employment gives employers significant flexibility, smart HR practice goes beyond the minimum legal requirements. Even in at-will situations, termination decisions should be:

  1. Documented: Maintain records of performance issues, coaching conversations, and policy violations to demonstrate legitimate business reasons for termination.
  2. Consistent: Apply policies and disciplinary actions consistently across the organization to avoid claims of disparate treatment.
  3. Reviewed: Before terminating an employee, conduct a "risk assessment" that considers potential legal claims, the employee's protected characteristics, any recent complaints or protected activity, and the overall circumstances.

The fact that employment is at-will does not mean there is no risk. Juries can be sympathetic to terminated employees, and even baseless lawsuits are expensive to defend.

Start Practicing Today

At-will employment questions appear regularly on the SHRM exam, which consists of 134 questions over 4 hours at Prometric or OnVUE. Be prepared to identify exceptions, evaluate termination scenarios, and recognize steps that protect at-will status.

SHRMpractice.com offers practice questions on at-will employment, wrongful termination, and related employment law topics. Take our diagnostic to find your strengths, then create your account for full exam preparation.

Ready to put this into practice?

SHRMpractice has 400 original flashcards, 30 timed mini exams, and 3 full-length simulations for every SHRM content domain.

Content is protected