(b) Subject to the constitutional right of workers to security of tenure and their right to be protected against dismissal except for a just and authorized cause and without prejudice to the requirement of notice under Article 283 of this Code, the employer shall furnish the worker whose employment is sought to be terminated a written notice containing a statement of the causes for termination and shall afford the latter ample opportunity to be heard and to defend himself with the assistance of his representative if he so desires in accordance with company rules and regulations promulgated pursuant to guidelines set by the Department of Labor and Employment. [21]              Rollo, p. 163. [22]              Id. at 157-173. [23]              Recognized exceptions to this rule are: (1) when the findings are grounded entirely on speculations, surmises or conjectures; (2) when the inference made is manifestly mistaken, absurd or impossible; (3) when there is grave abuse of discretion; (4) when the judgment is based on misapprehension of facts; (5) when the findings of facts are conflicting; (6) when in making the findings the Court of Appeals went beyond the issues of the case, or its findings are contrary to the admissions of both the appellee and the appellant; (7) when the findings are contrary to the trial court; (8) when the findings are conclusions without citation of specific evidence on which they are based; (9) when the facts set forth in the petition as well as in the petitioner’s main and reply briefs are not disputed by the respondents; (10) when the findings of facts are premised on the supposed absence of evidence and contradicted by the evidence on record; and (11) when the Court of Appeals manifestly overlooked certain relevant facts not disputed by the parties, which if properly considered, would justify a different conclusion (Langkaan Realty Development, Inc. v. United Coconut Planters Bank, G.R. No. 139437, 8 December 2000, 347 SCRA 542, 549; Nokom v. National Labor Relations Commissions, 390 Phil. 1228, 1243 [2000]; Commissioner of Internal Revenue v. Embroidery and Garments Industries (Phils.), Inc., 364 Phil. 541, 546-547 [1999]; Sta. Maria v. Court of Appeals, 349 Phil. 275, 282-283 [1998]). [24]              Nasipit Lumber Company v. National Organization of Workingmen (NOWM), G.R. No. 146225, 25 November 2004, 444 SCRA 158, 170.         [25]              Permex, Inc. v. National Labor Relations Commission, 380 Phil. 79, 85 (2000). [26]              Aklan Electric Cooperative Incorporated v. National Labor Relations Commission, 380 Phil. 225, 238 (2000). [27]              Malayang Samahan ng mga Manggagawa sa M. Greenfield v. Ramos, 383 Phil. 329, 368 (2000). [28]              Article 13, Section 3, of the 1987 Philippine Constitution. [29]              Article 277(b) of the Labor Code, as amended. [30]              Starlite Plastic Industrial Corp. v. National Labor Relations Commission, G.R. No. 78491, 16 March 1989, 171 SCRA 315, 323. [31]              Fil-Pride Shipping Co., Inc. v. National Labor Relations Commission, G.R. No. 97068, 5 March 1993, 219 SCRA 576, 581. [32]              Section H of the POEA Standard Employment Contract reads: 1.        x x x. 2.        The master shall have the right to discharge or sign off the seaman at any place abroad in accordance with the terms and conditions of this contract and specially for the following reasons:                 a. If the seaman is incompetent, x x x. (CA rollo, p. 48.) [33]              Buiser v. Leogardo, 216 Phil. 144, 152 (1984). [34]           Telefax message from J.P. Samartzsis Maritime Enterprises Co., S.A. dated 21 July 1998.                                 Reference is made to out fax of both (yesterday)                                           Pls. attend substitution of full crew due incompetence and erroneous difficulties produced thereof to the works and board the vessel as full:                 x x x B. 4th Engin Maguad Jerry: They must sign-off both at Tokyo on 37/7 or latest at Pusan on 30/7                                        x x x D. Bosun Ciudadano Proferio: He will sign-off and we shall send ourselves one exSamartzsis crew.