reluctant to fire those who one would expect would be deserving of termination. There are many reasons for this, which may include: Some positions may be hard to fill. This may be the case with a rare skilled position, or with certain low-wage jobs that are generally unattractive, where finding applicants is difficult. A person who has unusual skills, or who is doing a job that is considered undesirable, such as cleaning sewage from pipes, may be hard to replace. As such, a person in this position may be retained even if they have absenteeism or conduct problems. Another reason that bosses do not fire some problem employees is from a fear of retaliation. Sometimes the employer must be concerned about various types of action the former employee may take against the company, such as filing a wrongful termination suit: The terminated employee may take legal action in response to the firing. While laws vary in each country and jurisdiction, many employers keep extensive documentation of disciplinary action, evaluations, attendance records, and correspondence from supervisors, co-workers and customers in order to defend themselves in the event of such a suit. Additionally, the at-will employment contract, where the law permits, allows the employer to dismiss employees without having to provide a reason, though this has sometimes been challenged in court. As well, the employer may be concerned that the employee could make a negative report to public by divulging things about the company to others, thereby hurting their business; or that the employee may disclose trade secrets—a former employee may remove materials or divulge confidential information from the former employer and use it with another employer or in an independent business. Some employers may be afraid that a worker may make a report to law enforcement if the employer's practices are illegal. Other fears include the risk of sabotage by damaging machinery, erasing computer files, or shredding documents; or even violence: in some more extreme cases, fired employees have attacked or even killed their former employers or the staff at their old company or organization, sometimes known in slang as "going postal". In some cases, this has occurred several months or years after termination. Some employers terminate their staff off-site to avoid these issues, or they ban any terminated staff on their premises. Other reasons include: Unemployment insurance costs: In the United States of America and some other countries, such benefits