Olallo served as a nurse for his entire life and dedicated himself to the care of the ill and the poor and remained a pivotal figure in the hospital that he worked at.
Olallo bertugas sebagai perawat selanjang hidupnya dan mencurahkan dirinya sendiri untuk perawatan orang sakit dan kaum papa dan masih menjadi figur penting di rumah sakit dimana ia berkarya.