In 1946, Justice Ivan Rand of the Supreme Court of Canada crafted what became known as the "Rand formula". Appointed as arbiter to settle the Ford Strike of 1945, Rand concluded that both federal and provincial labor law made strong trade unions national policy. If workers were allowed to opt out of paying union dues, the free rider problem would undermine this policy. Rand went further to argue that the free rider problem undermines workplace order by causing resentment between union and non-union employees.