General union GMB says the firm plans to sell its estate for £350 million, putting hundreds of jobs at risk and creating uncertainty for residents and their families.
The group runs 67 care homes, with some in Doncaster, South Yorkshire, formerly run by Doncaster Council. GMB regional organiser Deanne Ferguson said: “During the past eight months, the terms and conditions of GMB careworker members in Doncaster have been subjected to some of the most savage cuts I have ever seen.
“We believe Runwood is in serious breach of its contract, putting both the residents and workers’ livelihoods at risk.
“GMB will fight tooth and nail for its members who so desperately need our help and support.”