The law, which came into force last November, will begin to be enforced in May when the six-month period of grace has expired.
From then, any business found to be violating the law could receive a hefty fine.
But the JCRA is keen to stress that until 1 May its ‘open door’ policy will still apply.
Any company that is unsure about the law and its status under it has until May to speak to representatives of the JCRA confidentially to try to resolve the problem.
Bill Brown, executive director of the JCRA, said: ‘We would strongly recommend that businesses, as a matter of urgency, look at their commercial arrangements with third parties to ensure that they comply with the Competition Law, if they have not already done so.