Labour would repeal potential laws to curb strikes which reportedly allow employers to sue unions and sack staff, Sir Keir Starmer has said.
The Times says ministers are preparing to announce legislation to enforce minimum service levels in six sectors, including the NHS and the railways.
The newspaper says this would require a minimum proportion of union members in these areas to work during strikes.
Sir Keir said legislation would "make a bad situation worse".
Answering questions following a speech in east London, the Labour leader said the government was "all over the shop" on the strikes issue.
"I don't think this legislation is going to work. I am pretty sure they have had an assessment that tells them that it is likely to make a bad situation worse," he said.
He said Labour would look at what was brought forward, but would repeal any further restrictions.