The government will look at how to make it easier for trusts to terminate contracted-out cleaning services when they are not satisfied with them.
The pledge was one of a number of Labour Party policy agreements negotiated between politicians and unions last weekend.
The unions signed up to support greater choice of healthcare, individual budgets and greater plurality of provision where it brings greater quality or innovation. However, the agreement also committed Labour to "maintaining and developing a central role for public provision and a directly employed workforce" in public services.
"We are committed to maintaining a central strategic role for public provision in services as a guarantor, comparator, standard setter and leading innovator," it said.