STRIKE-busting legislation to allow agency workers to cover for industrial action to be tabled within days.
Boris Johnson has backed the plan and will challenge Labour to show it is on the side of passengers and back him.
The new law will come too late to stop this week’s travel strike misery.
But it could be passed within weeks.
It will apply across the whole economy and will clip the wings of powerful unions.
A Whitehall source said: “We can’t have a situation where trade unions are holding the country to ransom by grinding crucial public services and businesses to a halt.
“If employers want to bring in temporary, skilled workers to fill gaps, they should be able to.”
Mick Lynch’s RMT will walk out on three days from tomorrow, costing the hospitality industry £500m.
And there are growing fears devastating strikes will spread across the economy as more unions threaten action.