In Wallem Maritime Services, Inc. v. National Labor Relations Commission,77[77] we cited the consistent application of the definition of permanent disability under Sec. 2 (b), Rule VII of the Implementing Rules of Book V of the Labor Code as amended by PD 626, which provides:   (b) A disability is total and permanent if as a result of the injury or sickness the employee is unable to perform any gainful occupation for a continuous period exceeding 120 days, except as otherwise provided for in Rule X of these Rules.78[78]     We likewise noted in Wallem Maritime Services, Inc.79[79] that:   The foregoing concept of permanent disability has been consistently employed by the Court in subsequent cases involving seafarers, such as in Crystal Shipping, Inc. v. Natividad,80[80] in which it was reiterated that permanent 76[76] Philimare, Inc./Marlow Navigation Co., Ltd. v. Suganob, supra note 72, at 448; citing Government Service Insurance System v. Cadiz, G.R. No. 154093, July 8, 2003, 405 SCRA 450, 454; Wallem Maritime Services, Inc. v. National Labor Relations Commission, supra note 74. 77[77] Supra note 74. 78[78] Wallem Maritime Services, Inc. v. National Labor Relations Commission, supra note 74. 79[79] Id. at 349-350. 80[80] G.R. No. 154798, February 12, 2007, Resolution.