The issue on Labor standard is one of the most contentious items on TPP(Tran Pacific Partnership) negotiation table. Since USA, Canada and New Zealand are more experienced in linking labor standard with Regional Trade Agreement(RTA) and have greater influences on RTA practice of other participants of TPP negotiation, there are reasons to believe that the essence of the negotiation is first the competition and compromise between the representative RTA practices of the three states, and then coming to some pr...