The first politician of any prominence to propose a salary cap was David Cameron, of all people.
But of course, he never did anything about it.
Just as Theresa May has shown no sign of doing anything about the disparity within companies that she has at least professed to bemoan.
Time, then, for specific proposals from Jeremy Corbyn.
Nothing to be permitted to pay anyone more than 10 times what it paid anyone else, with the entire public sector functioning as a single entity for this purpose.
And no one in the public sector or in any of its contractors to be paid more than the Prime Minister.