The most common reasons for suing an employer are for discrimination, harassment or creating a hostile work environment. In each case, it is necessary to present strong evidence that the employer did not meet basic expectations of supervisory conduct.
Lexis Nexis explains that just because employees think they have a valid reason for suing an employer does not necessarily mean they have a case in court. In order to successfully sue an employer, you must be able to prove that they engaged in illegal behavior. Employers are not required to treat employees kindly or follow traditional manners as long as they do not in any way violate the employee's personal rights. By agreeing to work for a company, employees may waive their right to sue over civil complaints, as long as no law is broken by their employer.
According to Nolo, wrongful termination is the most common reason employees sue their employers. In order to prove a wrongful termination case, employees must prove the employer is in violation of written or implied promises for continued employment. The matter becomes more complicated in states that allow employers to terminate employees without stating any reason, based on the concept of employment as a privilege and not a right.