Stoke council office workers currently receive two days annual leave more than craftworkers at the local authority.
In a consultative ballot of more than 225 craftworkers, who include joiners, plumbers and electricians, 99% voted in favour of taking industrial action over the disparity.
The Unite union, which represents them, said that it will begin formal industrial action proceedings if the council does not provide annual leave parity.
Unite general secretary Sharon Graham said: “It is totally unacceptable that these workers receive less holiday than their colleagues. This can be easily rectified by the council. These workers will receive Unite total support until it is.”
Unite regional officer Asif Mohammed added: “Our members are increasingly angry at the dismissive and anti-union attitude of their department leaders.
“These workers are out year-round in all weathers and will experience multiple physical injuries over the course of their working lives. It is a slap in the face for the council to turn round and say they deserve less holiday.”
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