Members of four unions working for the NHS are to strike for four hours this morning, in a dispute over pay increases.
It is the first time in its 133-year history that members of the Royal College of Midwives are to take industrial action.
They will be joined by staff who are part of Unite, UNISON, and GMB unions for the action which is due to start at 7am.
More than 100 midwives are expected to gather outside Russells Hall Hospital in Dudley, while pickets are expected at many other hospitals in the region, including Nottingham City Hospital and Queen's Medical Centre.
The dispute comes after it was announced in March that only NHS staff at the top of their pay band would receive a 1% pay increase, while the remaining 55% of the workforce would only get annual incremental rises.
More top news
Cloudier, colder, and showery this coming week.
Increasingly cloudy overnight. Sunny spells and showers Monday. Feeling cold.
After a chilly start, it will be a dry and fine day with plenty of sunshine.