Around 500 crane operators and support workers employed by Ainscough, Britain’s largest mobile crane hire firm, have voted overwhelmingly to strike over pay.
The Unite union members voted by 90 percent to strike on an 83 percent turnout.Over 90 percent also voted for action short of a strike.
They rejected bosses’ two-year pay offer of 2.5 percent and 2.75 percent.
The company made a profit of £14 million last year.
Escalating strikes across the firms’ 20 depots are now set to take place between Monday of next week and 23 March.
The strikes will take place alongside a programme of overtime bans that was set to begin this Saturday and last until 20 March.
Their action is set to cause major disruption to building projects across Britain.
The workers are employed on projects ranging from the M1 and M6 motorway upgrades to the new Forth Road Bridge.
Unite national officer for construction Bernard McAulay, said, “Ainscough needs to heed this warning and come back to the negotiating table with an improved pay offer or risk major disruption to its UK-wide operations.
“Our members are seeking a pay deal that recognises the dynamic and specialist skills they have.”