TRADE union bosses have warned of a potential Christmas food shortage in Morrisons stores as an industrial action ballot gets underway at one of the company’s partners.

More than 600 GMB members at the XPO Logistic depot near Bellshill, Lanarkshire, will be asked to support strike action after management was said to have breached the terms of an Acas conciliation agreement over its payroll and pensions arrangements.

A strike ballot was avoided earlier this year after GMB and XPO reached the agreement.

XPO is a main distributor of produce to Morrisons 60 stores in Scotland. The industrial action ballot, which runs until November 25, involves all occupations, including drivers and warehouse operators.

GMB’s Bob Deavy said: “XPO management are treating employees with contempt and their failure to stick to a basic Acas agreement has shattered any confidence there may have been left.

“We’ve been left with little choice but to move to a full industrial action ballot. Based on the depth of feeling among staff the prospect of a strike affecting distributions to XPO’s key client Morrisons is almost certain.”