It may not be immediately clear why an act empowering labor unions would be for the redistribution of wealth. Granted, it does not exactly fall under the category of levying either a direct or indirect tax. But so far as labor unions succeed in getting higher compensation for their members, a redistribution of wealth takes place, whether from employers to employees or ultimately from the higher prices that consumers may pay for the union produced goods. Thus, a redistribution of wealth is at least contemplated when labor unions are empowered by the government.
Clarence B. Carson, A Basic History of the United States, Volume 5: The Welfare State 1929-1985, pg.75