Unison and Unite will ballot members over action including strikes.
Unison will ballot its 300,000 members in England between 28 August and 18 September over potential strike action.
The ballot will cover health workers including nurses, therapists, porters, paramedics, medical secretaries, cooks, cleaners and healthcare assistants.
A “yes” vote could lead to stoppages in early October, followed by further strikes and action short of a strike over the autumn and winter.
Unite will be balloting its 88,000 members in England, Wales and Northern Ireland over whether they want to take strike action or industrial action short of a strike.
Ballot papers will start landing on doormats from 26 August and close on 26 September.
Will you be voting in the health unions’ ballots?