Motorway maintenance workers employed by Amey struck for 24 hours on Friday of last week and Monday of this week.
The Unite union members are in dispute over pay at depots in Newport Pagnell in Buckinghamshire, Breakspear at Hemel Hempstead, Whittlesford in Cambridgeshire and Sandy depot in Bedfordshire.
Amey has offered workers a 1.75 percent pay deal but bosses’ pay went up 65 percent in four years. Unite demands a 5 percent rise and has raised strike pay from £30 to £50 a day. Workers anticipate a long dispute.