GLOBAL unions exposed Samsung’s union-busting yesterday as the South Korean electronics giant appointed its founder’s grandson to its board.

The International Trade Union Confederation (ITUC) revealed details of a leaked PowerPoint presentation — intended for the eyes of corporate bosses only — decreeing specific “countermeasures” to be used to “dominate employees.”

The move by former vice-chairman Lee Jae Yong — chairman Lee Kun Hee’s only son — to a bigger role comes at a crucial time for South Korea’s most powerful “chaebol” or family-owned conglomerate.