BY JANESS ANN J. ELLAO Bulatlat Vol. VIII, No. 14, May 11-17, 2008 The P20 salary increase within Metro Manila is not sufficient for an average Filipino family, Bong Labog, chairperson of the labor group Kilusang Mayo Uno (KMU), said after the Regional Wage Board (RWB) announced the wage increase yesterday. Labog said they are…