JAM Liner Inc. is a bus company that serves direct routes from Manila to provinces of Laguna, Batangas and Quezon.

[citation needed] In 1990, they increased their bus network to the provinces of Quezon, Batangas, Camarines Sur, Albay and Sorsogon.

Chavez integrated JAM Liner's operations with Philtranco Services Enterprises, Inc., a bus company that Penta Pacific also bought out in 1999.

[17][18] It was JAM Liner's first expansion to Visayas and one of their biggest attempt in the region which is predominated by the country's largest, Yanson Group of Bus Companies.

[25] In March, JAM Liner along with their alliances Philtranco and FastCat unveiled their modernization program in aiming to link Luzon, Visayas and Mindanao.