The investigation and handling of industrial accidents and other problems that seriously endanger the health of employees must fully protect the rights and interests of employees and ensure fairness and justice. As an organization representing the interests of employees, trade unions play a vital role in this process. Because of its independence, professionalism and advantages in labor law knowledge reserve, it can provide comprehensive, objective, reasonable and effective opinions and suggestions in the investigation process. In the whole process of investigation and handling, the trade union can help the affected workers solve all kinds of difficulties and disputes. Pakistan can also communicate with employers to promote the affected employees to reach appropriate conflict resolution or reasonable demands, such as compensation and hard-earned money.