Health Minister Fernando Llorca Castro will replace Sáenz starting Thursday and Vice Minister María Esther Anchía will temporarily work as Health Minister.
Caja Pension Manager Jaime Barrantes said they will evaluate the unions' petition along with others that they have received from other groups in recent days.
Union leaders hope to block vehicle traffic along the capital’s Second Avenue, in front of the Caja’s main building, to get the institution's attention.
An aging population makes voluntary pension savings increasingly important in Costa Rica, but a recent support shows relatively few Ticos are starting to save.
