BBC staff at Salford Quays are on the picket lines along with thousands of employees across the country.
Some programmes will be disrupted during the 24-hour strike over job cuts.
Around 2,000 posts are set to go under cost-saving plans.
More top news
Patchy rain at first overnight before skies start to clear & winds pick up. A bright and breezy day for many midweek. Kerrie has the detail
Winter coats at the ready! Cold air from the continent moves in by Thursday. A raw wind and struggling daytime temperatures
A bride-to-be has shed more than half her original 19 stone weight after being ashamed that she could not fit into a rollercoaster seat.