China raised blood donations with non-tradable perks, not cash

China's voluntary blood donation system, established in 1998, ran on pure altruism — donors gave blood as a gift with no compensation, and supply chronically struggled to keep pace with demand. The obvious next lever, familiar from behavioral economics, is to simply pay donors cash.

That left blood authorities with an apparent dead end: pure altruism wasn't generating enough supply, but the standard fix for insufficient incentive (money) carried a real risk of making the underlying problem worse.

Rather than pay donors, China's blood collection authorities — piloted in Zhejiang province in 2014, then Jiangsu in 2017 and Hebei in 2018 — gave frequent donors (20 or more lifetime donations) an honour card granting real, valuable perks: free public bus rides, free park admission, free outpatient hospital consultations, plus ceremonial social recognition. Every single perk was deliberately designed to be non-tradable, non-transferable, and hard to assign a cash value to — valuable enough to matter, but structurally impossible to convert into a market price.

Gave frequent donors an honour card with non-tradable perks like free bus rides, so the reward is valuable but has no cash price to compare, sidestepping crowding-out.

Non-tradable perks have no market price, so donors can't compare them to a wage.

Avoiding a price tag keeps donating framed as a gift, not a transaction.

Real value without priceability preserves intrinsic motivation, boosting donations.

The effect grew over time, showing perks felt like recognition, not payment.

When cash rewards risk crowding out intrinsic motivation, offer valuable perks that are structurally impossible to monetize.

A staggered difference-in-differences analysis across the provincial rollout, covering 30 provinces from 2012 to 2018, found blood donation volume rose 3.5% by the end of the second year after the honour model's introduction and 7.7% by the end of the fifth year, with most of the increase driven by whole-blood donations specifically. Donor eligibility rates — the share of donors passing required health screenings — did not decline, indicating the increase came without any quality or safety trade-off.