[taft-hahrt-lee] 
| an act of the U.S. Congress (1947) that supersedes but continues most of the provisions of the National Labor Relations Act and that, in addition, provides for an eighty-day injunction against strikes that endanger public health and safety and bans closed shops, featherbedding, secondary boycotts, jurisdictional strikes, and certain other union practices. |
A major law concerning labor, passed by Congress in 1947. President Harry S. Truman vetoed Taft-Hartley (see veto), but it became law by a two-thirds vote of Congress. It marked a reversal of the pro-labor policies pursued under the presidency of Franklin D. Roosevelt. For example, the law prohibited a list of “unfair” labor practices and restricted the political activities of labor unions.
Taft-Hartley Act
A Federal law that was enacted in 1947 that prohibited certain union practices and required improvement in union disclosure of financial and political dealings.
Investopedia Commentary
Basically, the Taft-Hartley act is an outline of the Federal government's requirements for unions. It protects union members against possible unfavorable dealings enacted by the controlling members.
Also spelled: TaftHartley Act, Taft Hartley Act
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