ARTICLE 8. NATIONAL GRIEVANCE PROCEDURE
Section 2.Work Stoppages
All grievances and/or questions of interpretation arising under the provisions of this National Master Agreement shall be submitted to the grievance procedure for determination.
Accordingly, no work stoppage, slowdown, walkout or lockout over such grievances and/or questions of interpretation shall be deemed to be permitted or authorized by this Agreement except:
(a) failure to comply with a duly adopted majority decision of the National Grievance Committee;
(b) failure to make health & welfare and pension contributions in the manner required by the applicable Supplemental Agreements, Riders and/or Addenda; and,
(c) nonpayment of established wage rates provided for in this Agreement, Supplements, Riders and/or Addenda.
Except as provided in subsections (b) and (c) of this Section, strikes, work stoppages, slowdowns, walkouts or lockouts over disputes, which do not arise under provisions of this National Master Agreement, shall be permitted or prohibited as provided in the applicable Supplement, Rider and/or Addendum. The Local Union shall give the Employer a seventy-two (72) hour prior written notice of the Local Union’s authorization of strike action, which notice shall specify the majority National Grievance Committee decision or deadlocked National Grievance Committee decision providing the basis for such authorization. The Local Union shall comply with the provisions of the applicable Supplemental Agreement, Rider and Addendum relating to strike action resulting from delinquencies in the payment of health and welfare or pension contributions.