For the Cause is an economy gear perk that pays you Pesos when you liberate civilians. It turns freeing Yarans from the FND into a small income stream.
Each time you free civilians from the FND, you get Pesos. It pays off if you stop for the random captive events while travelling.
A modest money perk. Pickpocket and Peso Accountant usually earn more in regular play.
Peso Accountant raises the Pesos you collect, so the two stack well for a money build.