I believe the Unions' thinking goes more like that they represent a constituency of traditional 9 'til 5 workers with steady income from one employer. Since suc

I believe the Unions' thinking goes more like that they represent a constituency of traditional 9 'til 5 workers with steady income from one employer. Since such citizen are more likely to have Union membership, the Unions are fundamentally opposed to any social policy that would erode the basic motivation for majority of citizens to choose 9 'til 5 employment, like UBI. Remember that membership is everything to Unions.