Staff at a Post Office in Kings Heath will walk out in protest over jobs, pay and closures today.
Commercial Workers Union members will be protesting outside the branch as it is one of 70 that could be closed or turned into a franchise.
300 Crown Post Office staff members, from across the UK, are expected to walk out in support of the protest.
The Post Office say that nearly 12,000 branches are unaffected.
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A rather cloudy morning with outbreaks of rain easing. It will then turn brighter during the afternoon with sunny spells.
Cloudy with mist, hill fog and occasional rain or showers. Some bright spells forming during the day with a few showers, heavy in places.
Increasingly cloudier conditions will spread in from the east overnight. Outbreaks of rain are then likely later.