"The evidence from diverse interventions
in low-, middle-, and high-income contexts
indicates minimal impact on aggregate
measures of labor market participation,3,5,6
with some studies reporting an increase in
work participation.11 When reductions do
occur, time is channeled into other valued
activities such as caregiving."
Every single study that's ever been performed on UBI has shown a steady level of labor participation, or an increase in it. Any drop, was by a family that now could afford to have a stay at home parent.