Cabajar was born on 8 October 1942, in Jandayan Island, Jetafe, Talibon, Bohol, Philippines.

He attained a master's degree and doctorate in Moral theology from St. Anthelmo in Rome and in Madrid, Spain, respectively.

[5] He received his episcopal consecration from Cardinal Ricardo Jamin Vidal on 14 August and was installed on 2 September.

Jose R. Manguiran, Bishop Emeritus of Dipolog, and delegates of the Mindanao Convention on Family and Life held in Pagadian City.

A week after, he played host again to the delegates of the National Convention on Family and Life, led by Archbishop Gilbert A. Garcera of the Archdiocese of Lipa.