presenteeism       
noun [ U ]  business uk/prə.zənˈtiː.ɪzm/ us/prə.zənˈtiː.ɪzm/
 故意加班(指以延长正常工作时间来显示自己工作勤奋和对雇主的重要性)
the act of staying at work longer than usual to show that you work hard and are important to your employer
  Job insecurity is making presenteeism increasingly common. 工作上的不安全感使故意加班现象越来越普遍。