The Yine (formerly known as piro) suffered greatly when they were under the power of the rubber bosses in the early twentieth century. Many lives were lost. In the following decades they were enslaved by another type of bosses, the landowners, who sold them goods for work on credit. But the payment they received for their work was so low that it was impossible for them to repay their debts. Only after the Ministry of Education, with SIL support, established bilingual schools in Yine territory in 1953 did the Yine learn to keep accounts and were able to free themselves from the economic bondage of the landlord-peon system.
Traditionally the Yine practiced slash and burn agriculture and supplemented their diet with fish and game.