Where do LP's terms and condition of employment originate from?

Terms and conditions can flow from one of 3 sources: legislation, policy or the collective agreement.  Where terms and conditions of employment are contained in a collective agreement and there is a conflict between an employer's policy and a collective agreement provision, the collective agreement shall prevail.  Where there is a conflict between the collective agreement and legislation however, legislation is likely to prevail subject to the results of any challenge to such legislation.