Staff at the Central Bank Mint will start a work-to-rule on Monday.
The technicians, represented by Unite and the TEEU, are accusing the Central Bank of refusing to engage with them on a pay claim.
As well as the work-to-rule, the staff at the Mint in Sandyford, Dublin, have voted to hold one day strikes on July 11 and 12.
They will then hold all-out industrial action from July 18 if there is no resolution.