Answer:
National Labor Relations Act of 1935 (Wagner Act).
Explanation:
The National Labor Relations Act of 1935 determines the bargaining power between Trade Unions and Employers. It is also called the Wagner Act because it was written by Senator Robert F. Wagner. The main characteristics of the act are the right of the private employees to engage in collective bargain, collective action and to organize in trade unions. It was signed into law by the then President Franklin D. Roosevelt and it was a major initiative towards the labor law in the United States of America.