The contracts that these organizations enter into with subcontractors are supposed to contain language clauses. As far as knowing whether these clauses are clear enough, the question should go to the organizations in question. Does CATSA impose penalties? Does it refuse to grant bonuses if its subcontractors do not provide the required services? Could this be strengthened? Some of you would very likely say yes.
On May 4th, 2017. See this statement in context.