From a global perspective, some countries may have relatively low labor costs and accept lower wages to a certain extent to obtain job opportunities, but it cannot be generalized that workers in a certain country must be easy to accept low wages. Some Southeast Asian countries such as Vietnam, Cambodia, Indonesia, etc. are rich in labor resources and relatively low labor costs. Workers in some industries may be willing to accept relatively low wages to maintain employment. There are certain labor cost advantages in manufacturing and other fields. Some African countries also have a large number of labor forces. In some infrastructure construction projects, local workers may have a certain tolerance for lower wages based on their own employment needs and economic development level. However, just considering low wages to control project costs is unsustainable and has many problems. For example, it may lead to low enthusiasm of workers, low labor efficiency, and difficult to guarantee the quality of work. It may also cause related disputes and risks such as labor rights and interests, and even affect the long-term sustainability and social reputation of the project. In international projects, it is necessary to comprehensively consider a reasonable salary system, working conditions, training and development opportunities and other factors in order to establish a stable, efficient and sustainable cooperative relationship to ensure the smooth progress of the project. At the same time, it is necessary to strictly abide by local laws and regulations and international labor standards to protect the legitimate rights and interests of workers.