"Breaching a contract" means that one party does something that breaks their terms of the contract. For example, if the terms of the agreement state that the employer must pay severance pay for an employee who is terminated for reasons other than for cause, and severance isn't paid, that's a breach. If an employee feels that their employer had beached the contract, and this breach has resulted in harm to the employee (loss of pay, for example), the employee must take their case to court. That means getting an attorney and filing a lawsuit to recover damages. An employer has another remedy to stop an employee who is causing harm by breaching the contract. This happens most often when an employee breaches a non-compete agreement or non-solicitation agreement. In these cases, the employer can ask a court for an injunction requiring the employee to stop the action that is harming the employer. However, this may be a temporary injunction while the case goes through the process.