Generally, in Pennsylvania, the Workers' Compensation Act does not allow for mental injuries stemming from the workplace. In other words, the legislature has been very hesitant to allow injured workers in Pennsylvania to claim a psychological injury related to work unless very specific factors are met. This makes sense that because it appears that the legislature did not want the common employee to be able to bring a claim for mental stress related to a "mean boss", or a very stressful job. If that were the case, the courts would be flooded with thousands of disgruntled employees who simply hate either their job or their immediate supervisor. Thus, the law requires a heightened standard for mental injuries stemming from mental stimuli at work. In other words, we are talking about injuries that are psychological in nature, and caused by some type of psychological stimulus. That heightened standard, which must be proved by an employee claiming this type of so-called mental-mental injury, is an "abnormal working condition."