World Rugby Handbook
BYE-LAW 4. PARTICIPATION IN THE GAME
(a) The Game is an open game where Persons may receive Material Benefit notwithstanding that for the majority of Persons the Game will remain a non-vocational leisure activity.
(b) Pursuant to Bye-Law 3(b) the Council shall as and when it deems necessary frame and adopt Regulations which shall be binding on all Unions and their constituent bodies.
(c) Subject to any legal requirements in the country of its jurisdiction a Union may pass additional more restrictive regulations provided that they are not in conflict with the Regulations. Such regulations shall have effect only within the jurisdiction of that Union.
(d) Associations must comply fully with the Common Association Constitution as approved by the Council.