By respondent’s claim, he became depressed due to the frequent verbal abuse he received from his German superiors within less than one month that he was on board the vessel. Aside from a “To whom it may concern” handwritten letter of respondent13[13] attached to his Position Paper filed before the arbiter detailing the alleged instances of verbal abuse, which letter bears the alleged signatures of some of respondent’s colleagues, respondent failed to proffer concrete proof that, if indeed he was subjected to abuse, it directly resulted in his depression.   WHEREFORE, the petition is GRANTED. The Court of Appeals Decision dated September 30, 2009 and the Resolution dated December 17, 2009 are REVERSED AND SET ASIDE and the National Labor Relations Commission Decision dated January 31, 2008 and Resolution dated April 25, 2008 dismissing respondent’s complaint are REINSTATED.   SO ORDERED.   CONCHITA CARPIO MORALES Associate Justice 13 [13] NLRC records, p. 61.