Rule 65 against NLRC confined merely to issues of jurisdiction, grave abuse of discretion

As regards the alternative argument of petitioner that the computation of the award was erroneous and arbitrary, it must be rejected outright as it was apparently never brought to the attention of respondent NLRC. Consequently, it cannot be raised for the first time before this Court since that would be offensive to the basic rule of fair play, justice and due process. Moreover, the original and exclusive jurisdiction of this Court to review a decision of respondent NLRC in a petition for certiorari under Rule 65 does not normally include an inquiry into the correctness of its evaluation of the evidence but confined merely to issues of jurisdiction or grave abuse of discretion. [G.R. No. 117878. November 13, 1996]