[1] Pasion started his career as a designer's apprentice for director Marilou Diaz-Abaya in the film Muro Ami in 1999, until he became a scriptwriter for movies Crying Ladies, Volta, and script consultant for Feng Shui, Milan.
[5] "Jay" is a film based on a story of a television documentary producer who documented the murder case of a gay school teacher, and starred by Geisler and Coco Martin.
[11] Pasion started his career in television as a headwriter and producer of ABS-CBN's public service-drama program Nagmamahal, Kapamilya in 2006,[12] and writer for drama anthology Maalaala Mo Kaya.
Among his notable ABS-CBN teleseryes that he directed are Sabel, My Binondo Girl, Kahit Konting Pagtingin, Princess and I, My Little Juan, Dyesebel, and Nathaniel.
[13] His last television project was On the Wings of Love, starred by James Reid and Nadine Lustre, collectively known as "JaDine",[4] which ended on February 26, 2016, 9 days before his death.