Most US states have adopted the at-will employment contract that allows the employer to dismiss employees without having to provide a justified reason for firing, although the variety of court cases that have come out of "at-will" dismissals have made such at-will contracts ambiguous. Often, an at-will termination is handled as a "layoff". Sometimes, an employee will be dismissed if an employer can find better employees than the incumbent, even if the fired employee has not technically broken any rules. This is common with probationary employees who were recently hired, but who cannot adjust to the environment of the workplace, or those who have been around for a long time, but can be replaced with a less experienced employee who can be paid a lower salary. In contrast, a dismissal in France is subjected to a just cause and a formal procedure.