A union has warned of potential disruption during the 2023 World Cycling Championships if workers back strike action in a dispute over pay.
GMB Scotland has served notice to ballot staff working in parking services in Glasgow and at the city's Sir Chris Hoy Velodrome where track events will take place.
The union warned if there is strike action the championships in August will face city-wide disruption, with cars blocking streets for road events and velodrome events unable to go ahead.
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It comes after 94% of GMB Scotland members rejected the 5.5% offer from employers.
Meanwhile, Unison has served notice of intention to ballot members for strike action over pay in Glasgow City Parking and at the Emirates Arena, where artistic cycling and cycle-ball will take place.
Earlier this month, GMB Scotland began balloting 8,000 of its local government members working in schools and early years settings for strike action, including cleaning, catering, janitorial, pupil support assistants and early years practitioners.
Keir Greenaway, GMB Scotland senior organiser for public services, said: "Our members on the front line of our local, public services are being offered a pay cut during the cost-of-living crisis whilst council leaders want to parade around during the World Cycling Championships.
"If councillors want to bring a first-class event to the city, they can't give our members a second-class pay offer. They need to get on their bike and ask Scottish ministers for support to deliver a pay offer that values frontline council workers.
"Despite 94% of our members resoundingly rejecting the pay offer, Cosla have made little attempt to continue negotiations and council leaders are refusing to ask for Scottish Government intervention. These negotiations are going nowhere and are forcing council workers to face soaring inflation without the pay increase they deserve.
"GMB Scotland has been clear: our members need an improved offer which can only be achieved through the intervention of Scottish Government. Otherwise, strike action is inevitable and any disruption to this global event will only further highlight the importance of the local government workforce."
The GMB Scotland ballot will be posted out to members working in parking and at the velodrome on Monday June 26.
Unison Scotland head of local government Johanna Baxter said: "No-one wants to disrupt the World Cycling Championships. Local government workers have been working hard preparing for the event.
"However, local government workers in Scotland have suffered over a decade of pay cuts and, along with the rest of the country, are living with the cost-of-living crisis.
"They overwhelmingly voted to reject Cosla's pay offer and have made it clear they are willing to take strike action to secure an improved offer."
The UCI Cycling World Championships will take place from August 3 to 13.
Unite general secretary Sharon Graham said: “Unite is standing up for our members in City Parking and Glasgow Life. They deserve a fair pay award along with all local government workers across Scotland.
"COSLA and the Scottish Government know the 5 per cent offer is nowhere near good enough. However, it’s clear that COSLA and the Scottish Government have just simply ignored the multiple warnings we have sent them.
"Unite will always stand up for our members fighting for better jobs, pay, and conditions.”
A Glasgow City Council spokeswoman said: "Local government pay negotiations are conducted nationally through Cosla, not by individual councils.
"However, the council's political leadership has made it clear, as it did last year, that Glasgow supports a settlement that works for both our staff and for public services."
Cosla said it remains fully committed to meeting with trade unions at any time.
A Scottish Government spokesman said: "Local government pay negotiations are a matter for local authorities as employers and unions - the Scottish Government has no formal role.
"Despite UK Government cuts, the Scottish Government announced further funding as part of this year's budget for councils to support a meaningful pay rise for local government workers.
"The Scottish Government urges all the parties involved to work together constructively and reach an agreement which is fair for the workforce and affordable for employers."
