A union is threatening to remove its council members if temperatures surge past 30C tomorrow.

This comes as the current heatwave in Glasgow is pushing the mercury up towards 30C.

GMB Scotland is demanding that employers, including Glasgow City Council, put measures in place to support the workers' wellbeing.

The union's demands include a legal maximum workplace temperature of 25C indoors, regular breaks, water, sunscreen and hats supplied to workers.

The union has also claimed that it asked employers for a thermal comfort risk assessment to be carried out as an emergency, following a demand for lighter uniforms in June.

READ MORE: 'I’m Glaswegian, I don’t like heat': Glasgow react to scorching temperatures

Tom Rigby, regional health and safety officer, told the Glasgow Times: "This legal temperature limit is in line with the WHO standard and would force employers to put in place proper ventilation, air conditioning and everything else.

"For people working outside, we want them to take regular breaks, to be supplied with plenty of cold water and most importantly, we want work to be rescheduled where possible, so they are not working outside during the hottest parts of the day."

In case tomorrow's heat surpasses 30C, GMB Scotland said it is exploring the possibility of revoking section 44 of the health and safety act.

This law reserves the right for workers to remove themselves from serious and imminent danger.

READ MORE: Glasgow councillor urging people to escape the heatwave in city's museums

Mr Rigby added: "It's basically the right to stop the job if you think your safety is being threatened.

"It's part of the safety legislation and the basic idea is that you shouldn't be told to put yourself at risk."

The Scottish Greens are backing this demand.

MSP Ross Greer said: “This is an idea whose time has come.

"The temperatures we are seeing this week should not be normal, but they are sadly likely to become just that as the effects of the climate emergency are made clear.

"All employers are required to provide a safe working environment. If they are unwilling to do so, their workers should be protected from extreme heat by the law.

“It shouldn't take Government to force employers into protecting their staff though.

"Organisations should be taking steps now to mitigate the worst effects of the heat, including by seriously considering whether workers need to travel into their office at all, or if their work can either be done from home or paused without any loss of pay.

"The scorching heat we're seeing right now is not a one-off. Unfortunately, as we look to the future, these sweltering conditions are likely to become more common.

"A maximum working temperature is now clearly essential in an era of regular heatwaves. Our climate is changing. It's time for workers' rights to do the same."

A Glasgow City Council spokesperson said: “We fully acknowledge the impact of the current high temperatures on working conditions.

“Our health and safety team issued guidelines on safe working in hot weather for staff who are deployed outdoors.

“We are also fully supportive of regular water breaks and protective clothing that’s suitable for working in higher temperatures has been issued with the agreement of staff and the union.

“We are aware of the weather forecast that indicates higher temperatures still on Tuesday and we will be engaging with the trade union on how the impact of the heat on staff can be mitigated.

“The health and safety of our staff is always a top priority.”