XIII. The rank-and-file union staged a strike in the company premises which caused the disruption of business operations. The supervisors union of the same company filed a money claim for unpaid salaries for the duration of the strike, arguing that the supervisors' failure to report for work was not attributable to them. The company contended that it was equally faultless, for the strike was not the direct consequence of any lockout or unfair labor practice. May the company be held liable for the salaries of the supervisor? Decide (6%)