After failing to bring in his promised "no strike deal" with the unions, Boris Johnson now wants to ban certain strikes instead.
Under plans discussed with Philip Hammond:
"between 30 and 40 per cent of a union's entire membership would be required to support industrial action, as well as a majority of those actually voting, to make a strike legal."
They argue that strike ballots with low "turnouts" have no legitimacy and that thresholds would ensure that all strikes have a democratic mandate.
But why stop there? Why not apply the principle elsewhere?
Take Boris's consultation on removing the Western Extension which received the impressive backing of around 0.3% of Londoners.
Or his comrade David Davis, who withdrew his labour at public cost and received the backing of just 24% of his electorate.
Or Boris himself who was elected as Mayor with the first preferences of just 19% of his electorate.
Where was the democratic mandate there Boris? Is it time for another ban?