He completed his preparatory, elementary, and high school education at the Ateneo de Manila University.  He obtained from the same university his undergraduate degree in Bachelor of Arts, Major in Economics in 1975 and his postgraduate degree in Bachelor of Laws in 1979.

He passed the 1979 bar examinations, and after his admission to the bar on May 8, 1980, he specialized in labor laws.

He co-founded the firm and was the partner in charge of labor cases.

He left the firm in April 2006 when he joined public service as Commissioner of the Third Division of the National Labor Relations Commission (NLRC), representing the Labor Sector.  He was promoted to Presiding Commissioner of the Second Division of the NLRC and became Vice Chair of the NLRC, where he served until his compulsory retirement in 2018.

He rejoined the firm in 2019 and resumed being the partner in charge of labor cases.

He is an Accredited Voluntary Arbitrator of the Department of Labor and Employment.

He co-authored a book on Land Titles and Deeds with his late father, former Land Registration Authority Commissioner Gregorio G. Bilog Jr.

Email address: greg.bilog@gblrlaw.com