It would probably be a decent first step to commit to covering all the direct and indirect costs of donating a kidney. Not everyone can afford the time off work

It would probably be a decent first step to commit to covering all the direct and indirect costs of donating a kidney. Not everyone can afford the time off work and life required to go through the operation and recover, and then guarantee that they'll have reliable health care for the rest of their lives. There's lots of room to debate whether income replacement should be included and at what level, but among the dozens of existing systems that do it (jury duty, unemployment, disability leave, parental leave...) it should be plausible to find a model that people feel is acceptable.