'In parliamentary systems, parties compete for votes and offices in the electoral arena but in many systems they also cooperate in the legislative arena. This paper examines the question of whether the government status of parties affects their legislative behaviour and, hence, policy outcomes. We develop a simple veto player model that includes parties' positional goals (vote, office, etc.) to formalize the notion of accommodating legislative behaviour. The model predicts that government parties are most accommodating while opposition parties are least accommodating. The hypothesis is then tested by comparing two pairs of most similar political systems: Danish and Finnish coalition governments, as well as German and Australian bicameralism...