According to the National Conference of State Legislatures, in every state except Montana, employment in the U.S. is mainly at-will. This means both you and your employer have the right to terminate the relationship anytime and for any legal reason without prior notice. The burden lies on you to prove you were fired directly because of a workers’ comp claim. However, an employer who says or infers that your job will be secure creates an implied contract of employment that supersedes the at-will relationship. According to Judge Anthony P. Calisi, this may afford you an implied legal right not to be fired during recovery or after returning to work.