He began his career as a lawyer at the bar of Brussels. His political career developed within the Catholic Party and he played a very important role in this party. He started his political career at the Catholic Conference in Mechelen. In 1869, Woeste founded the "Verbond van Katholieke Kringen", an early attempt to create a Catholic party. In 1921, this party was renamed in the "Catholic Union of workers, citizens, tradesmen and farmers". After his death, on the occasion of the large election defeat of the Catholics in 1936 this Catholic Union was replaced by the Catholic Block.