According to statistics, more than 80% percent of the world’ s goods are transferred by merchant ship lines. As reported by the latest statistics 11 billion tons of goods are transported by ship each year. Hence, the global economy is dependent on maritime transport, and its lack causes countries to face a crisis. Therefore, the establishment of decent work in the environments of merchant ships for seafarers has fundamental importance. Merchant ships of the world that are registered in more than 150 countries employ more than 1. 5 million seafarers. In this study, using a descriptive-analytical method, the findings of this study show that the Maritime labor Convention enacted minimum standards for the living and working environment for seafarers at the international level. In fact, this convention is considered the fourth pillar of maritime international regulation that was created to help in establishing a situation for decent work. In addition, the convention expresses fundamental rights and principles that seafarers face in relation to the condition of work and living onboard. Therefore, they have rights that should be observed by ship owners and the state flag is binding to confirm the situation of ships to the requirements of the convention. In addition, in decent maritime work, seafarers have a job, and they will be entitled to have the right of social support. In other words, other factors in the environment, including freedom of assembly and of association, the prohibition of discrimination in employment, the observance of the minimum age, the prohibition of children under 16, the minimum wage proportional to the minimum subsistence, the existence of social security, unemployment insurance, rehabilitation, empowerment of women through the acquisition of appropriate job opportunities and the existence of social dialogue between the employer, the employee, and the government is also mandatory.