Reagan vs. Unions:

http://www.dickmeister.com/id89.html
he was one of the most anti-labor presidents in U.S. history, a role model for the virulently anti-labor George W. Bush. 

Republican presidents never have had much regard for unions, which almost invariably have opposed their election. But until Reagan, no GOP president had dared to challenge labor's firm legal standing, gained through Democratic President Franklin D. Roosevelt in the mid-1930s. 

Reagan's Republican predecessors treated union leaders much as they treated Democratic members of Congress -- as people to be fought with at times, but also as people to be bargained with at other times. But Reagan engaged in precious little bargaining. He waged almost continuous war against organized labor. 

"..ideologue of the anti-labor political right; ..... was notoriously pro-management, leading the way to a strike-ending agreement in 1959 that greatly weakened the union"