Hundreds of workers at Alexander Dennis are set to strike, after rejecting a pay offer.
The Unite union said about 400 coach builders and spray painters voted for industrial action from Tuesday until Friday.
A second round is due to start on 3 October and last until 14 October.
According to the union, the bus company's latest proposal was a 4% rise from April to October, which would then increase to 6.6% from October, which represented "a significant real terms pay cut" in the face of rising inflation.
It highlighted Alexander Dennis' "healthy order book", after the company won contracts to manufacture 172 green buses through a second round of the Scottish government's £40.5m Scottish Ultra-Low Emission Bus Scheme.
Unite industrial officer Pat Egan said: "Unite has engaged in direct talks for months now to find a resolution to this pay dispute.
"Our members have been forced by the company to take this strike action and they will continue to take action until the company sees sense."
Alexander Dennis, which has bases in Camelon and Larbert, responded with disappointment at the industrial action going ahead.
"This action comes despite our sincere and best efforts to reach a fair and reasonable agreement," a spokesperson added.
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