Montana is the one state in the country that has effectively abolished pure at-will employment. Under the Montana Wrongful Discharge from Employment Act (WDEA), codified at Montana Code Annotated sections 39-2-901 through 39-2-915, once an employee has finished the probationary period, the employer cannot fire that worker without "good cause." A termination of a non-probationary employee that is not for good cause is itself a wrongful discharge for which the worker can sue. This is the opposite of the rule in the other 49 states, where employment is presumed at-will and a worker can be let go for any reason that is not specifically illegal.
The Federal Baseline and How Montana Differs
In nearly every state, "at-will" means either side can end the employment relationship at any time, for any reason or no reason, as long as the reason is not unlawful. Federal law sets only floors: the Fair Labor Standards Act (FLSA) guarantees a $7.25 federal minimum wage and overtime at one-and-a-half times pay after 40 hours in a workweek, and laws like Title VII of the Civil Rights Act, the ADA, and the ADEA forbid firing someone because of a protected characteristic. Outside those federal and state protections, most states let employers fire workers at will.
Montana built a higher standard on top of that federal baseline. The Legislature passed the WDEA in 1987 to replace the common-law at-will system and the patchwork of court-made exceptions with a single statutory framework. The practical result: after probation, Montana employees have meaningful job security that workers in other states do not.
The Probationary Period: When At-Will Still Applies
The WDEA does not apply from day one. During an employee's probationary period, the relationship is essentially at-will, and the employer may discharge the worker without the good-cause protection. The employer may establish a probationary period in its policies. If the employer does not set one, the statute provides a default probationary period that, following a 2021 amendment to the Act, runs 12 months from the date of hire (the default was previously six months, so confirm which version applies to your hire date). An employer may also expressly designate a probationary period of a different length in its written policies.
This is why timing matters so much in Montana. A firing in month two may be lawful even if it feels unfair, while the same firing after the probationary period ends could be a wrongful discharge if there was no good cause.
What Makes a Firing Wrongful in Montana
Under the WDEA, a discharge is wrongful if any one of these three things is true:
- Public policy: The employee was fired in retaliation for refusing to violate public policy, or for reporting a violation of public policy. Public policy means a policy established by a constitutional provision, statute, or administrative rule. This covers situations like being fired for refusing to break the law or for whistleblowing.
- Lack of good cause: The discharge was not for good cause and the employee had already completed the probationary period.
- Violation of the employer's own policy: The employer violated the express provisions of its own written personnel policy in carrying out the discharge.
These three statutory grounds map onto, and replace, the older common-law exceptions you may read about elsewhere. The traditional public-policy exception is written directly into the Act. The implied-contract exception and the covenant of good faith and fair dealing are largely subsumed by the good-cause requirement and the rule that an employer must follow its own written policies. In Montana you generally cannot bring those common-law claims separately for a discharge; the WDEA is the exclusive remedy for most wrongful-termination cases.
What "Good Cause" Means
"Good cause" is defined in the statute as reasonable, job-related grounds for dismissal based on a failure to satisfactorily perform job duties, disruption of the employer's operation, or other legitimate business reason. A 2021 amendment also clarified that, for managerial and supervisory employees, good cause includes the employer's legitimate right to exercise discretion over whom it employs in those roles. Good cause does not require proof of serious misconduct; poor performance, legitimate restructuring, or a bona fide business need can all qualify, as long as the reason is real and job-related rather than arbitrary or pretextual.