Which organization is the central labor administration competent authority in our country?

The Ministry of Labor serves as the central labor administration competent authority in many countries, which is why it is the correct answer. This governmental body typically encompasses a wide range of responsibilities, including the establishment and enforcement of labor laws, regulation of working conditions, and oversight of labor relations. It acts as the primary source of labor-related regulations and policies, ensuring that the labor market operates effectively and fairly.

The other organizations listed may play vital roles in the labor landscape but do not function as the overall authoritative body. For example, the Department of Labor often focuses on specific labor-related issues or programs, while a Service Employment Agency is typically involved in job placement and employment services rather than broad regulatory authority. Similarly, the Labor Relations Board usually deals with issues related to collective bargaining and disputes between management and labor unions, rather than having overarching competencies over all labor administration matters. Thus, the Ministry of Labor is positioned as the central authority to guide and implement labor policies in the country.