Around 65 engineers working for lift company Otis are picketing at Dublin Airport in a dispute over redundancies at the firm.
Pickets are currently in place at the company's offices in Dublin and Cork, and at Terminal Two in Dublin Airport.
The Technical Engineering and Electrical Union claims that tomorrow its striking members from Otis intend to hold rolling pickets, where the picket moves between locations, at shopping centres where Otis is contracted to maintain equipment.
