What is at-will employment and what does it mean for me?

At-will employment is the default rule in every US state except Montana. It means that either party — employer or employee — can end the employment relationship at any time, with or without notice, and with or without a reason. Your employer can let you go because of a restructuring, because they want to cut costs, because they don't like your attitude, or for no stated reason at all — and it is generally legal.

At-will has important exceptions. Your employer cannot terminate you for an illegal reason: discrimination based on a protected characteristic (race, sex, age, disability, religion, national origin, and others under federal and state law), retaliation for whistleblowing or filing a workers' compensation claim, or exercising protected concerted activity under the National Labor Relations Act. These exceptions mean at-will is not quite as absolute as it sounds — wrongful termination claims are possible when the employer's true reason was unlawful.

At-will employment can also be limited by contract. If you have a written employment agreement specifying that you can only be terminated 'for cause', or a collective bargaining agreement, or if your employer's handbook makes promises about termination procedures, those commitments may override the at-will default. Courts in some states also recognise an implied covenant of good faith and fair dealing that limits at-will termination in extreme bad-faith situations.