Janitors are continuing their week of strike action as their dispute over pay continues.

The primary school staff, who are all members of trade union Unison, say they deserve extra pay for unpleasant and physically demanding duties comparable to what their colleagues receive.

Dozens of staff demonstrated outside the city chambers yesterday as part of the Justice for Jannies campaign, and will continue their pickets for the rest of the week.

Despite issuing 'wanted' posters for council leader Frank McAveety and other prominent figures, as well as staging strikes since March, union officials say they have been unable to reach an agreement with Cordia.

Union sources also claim they have been kept in the dark over Cordia's plans for janitorial reform.

Read more: Jannies jobs to be 'reformed" in a bid to save Cordia £11m

The firm, an arms length council company, said it was reviewing janitors duties as part of a package of cost-cutting measures designed to save £11m in the next two years.

A Unison spokesman said: "We said if there was anything in the review that we could discuss to offset this dispute but they said no. They are ignoring the trade union's attempt to resolve this issue.

A Cordia spokesman said: "Cordia has exhausted each of the stages of an extensive formal grievance process with its janitorial staff.

"Around one third of the overall janitor workforce is participating in industrial action this week."

The Cordia spokesman further added: "The organisation is working closely with Glasgow City Council Education Services to ensure there is minimal disruption at affected schools."