Held on May 15 of every year, the Pahiyas Festival is carried out to give thanks to San Isidro Labrador for the good harvest.  It is one of the country’s oldest festivals tracing its origin way back to the 16th century.  Back then, farmers bought food to the foot of Mt. Banahaw as a sign of Thanksgiving, but eventually this tradition — done in the hopes of having a good harvest year — was modified to make the church the central offering place.

The Pahiyas is commonly associated with Lucban, Quezon, but it is also celebrated in two other Quezon towns: Sariaya and Tayabas.