Counterplan competes.

One potentially helpful analog is the negative income tax. This is where a government guarantees you a certain minimum income, which it takes away gradually as you start earning more money on the job. Negative income tax is not a basic income, since it’s not unconditional -- the phase-out of benefits acts like an income tax, which economic theory says should discourage work. But it’s a good starting point for thinking about universal basic income, because if a negative income tax doesn’t discourage work very much, then a similarly sized UBI almost certainly wouldn’t.