Kemi Badenoch will take aim at Labour’s employment rights legislation on Monday, arguing that scrapping it would be the “cheapest pro-growth measure” the Chancellor could take at the Budget .

She is expected to say the Employment Rights Bill is “the single most complained-about measure” she hears when she speaks to businesses, in a speech at the CBI’s annual conference in central London.

The Conservative Party leader will say the Bill is “not about fairness, it is about power” and that it seeks to take Britain “back to a world where unions call the shots and employers carry the blame”.

Initial measures linked to the Bill, such as day one paternity leave and changes to statutory sick leave, are due to come into force in April next year.

Further measures, such as banning unfair zero

See Full Page