Staff at a Hampshire supermarket could stage a walkout after claiming health and safety issues have left them at "breaking point".

Up to 100 GMB members at the Asda in Dock Road, Gosport, are set to vote on strike action after citing what the union describes as a "litany" of grievances.

The ballot begins on Friday, December 8 and closes on Friday, December 22.

A GMB spokesperson said: "The dispute centres around the staff’s treatment at the hands of store management, including constant wage errors, pressure to work extra shifts, and numerous health and safety issues.

"GMB members report fire safety complaints, including fire exits being constantly blocked, and are not satisfied with how issues and grievances have been resolved.

"If workers vote to strike, industrial action could take place as early as January."

Nicola Nixon, GMB regional organiser, added: "This dispute has been brewing for some time now, with local management continuing to ignore growing concerns and an extremely stressed workforce reaching breaking point.

"Complaints were so wide and varied that a list of some 21 points of concern have been drafted to be shared with ASDA national management."

The spokesperson said store bosses should "stop burying their heads in the sand" and address the health, safety and welfare issues raised by staff.

"By mid-January they will need to have engaged positively with GMB and members at the store or risk seeing them standing outside and accept the disruption to business that a strike will cause.

"This dispute may have been avoided had management invested in their staff a little more."

An Asda spokesperson said: "We value feedback from our colleagues and have established procedures in place for them to raise any concerns with us.

"The GMB has not brought any issues at the Gosport store to our attention. However, we would welcome the opportunity to meet with them and discuss any concerns they may have."