SECOND DIVISION [G.R. No. 138938. October 24, 2000] CELESTINO VIVIERO, petitioner, vs. COURT OF APPEALS, HAMMONIA MARINE SERVICES, and HANSEATIC SHIPPING CO., LTD. respondents. DECISION BELLOSILLO, J.: CELESTINO VIVERO, in this petition for review, seeks the reversal of the Decision of the Court of Appeals of 26 May 1999 setting aside the Decision of the National Labor Relations Commission of 28 May 1998 as well as its Resolution of 23 July 1998 denying his motion for its reconsideration, and reinstating the decision of the Labor Arbiter of 21 January 1997. Petitioner Vivero, a licensed seaman, is a member of the Associated Marine Officers and Seamen's Union of the Philippines (AMOSUP).The Collective Bargaining Agreement entered into by AMOSUP and private respondents provides, among others - ARTICLE XII GRIEVANCE PROCEDURE xxxx Sec. 3. A dispute or grievance arising in connection with the terms and provisions of this Agreement shall be adjusted in accordance with the following procedure: 1. Any seaman who feels that he has been unjustly treated or even subjected to an unfair consideration shall endeavor to have said grievance adjusted by the designated representative of the unlicensed department abroad the vessel in the following manner: A. Presentation of the complaint to his immediate superior. B. Appeal to the head of the department in which the seaman involved shall be employed.

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