GENEVA - Asia was the world's most disaster-hit region by climate-related hazards last year, the World Meteorological Organization said, with floods and storms causing the highest number of casualties.

In a report published on Tuesday, WMO said that 79 disasters linked to hydro-meteorological events had been reported in Asia in 2023. More than 80 percent of these were related to floods and storms that caused more than 2,000 deaths.

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"Many countries in the region experienced their hottest year on record in 2023, along with a barrage of extreme conditions, from droughts and heatwaves to floods and storms," said WMO Secretary-General Celeste Saulo.

"Climate change exacerbated the frequency and severity of such events."

Asia is warming faster than the global average, according to WMO.

The report also highlighted that most glaciers in the high-mountain region in Asia had loss significant mass because of record-breaking high temperatures and dry conditions.

World's workers at risk

More than 70 percent of the global workforce is exposed to risks linked to climate change that cause hundreds of thousands of deaths each year, the International Labour Organization said on Monday, adding governments would need to act as the numbers rise.

The share of global workers exposed to the most widespread hazard, surging temperatures, has risen by around 5 percentage points over the last two decades to 70.9%

Workers, especially the world's poorest, are more vulnerable than the general population to the dangers of climate extremes such as heatwaves, droughts, wildfires, and hurricanes because they are often the first exposed, or exposed for longer periods and at greater intensity.

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As climate change accelerates, governments and employers are struggling to protect employees, the ILO said in a report.

"A staggering number of workers are already being exposed to climate change-related hazards in the workplace, and these figures are only likely to get worse," the report entitled "Ensuring safety and health at work in a changing climate" said in its conclusions.

"As (the hazards) evolve and intensify, it will be necessary to re-evaluate existing legislation or create new regulations and guidance."

However, rules to govern other dangers like growing pesticide use for agricultural workers are less common.

"We do have some (countries) that already limit exposure to high temperatures and also limit exposure to air pollution, but we rarely have occupational exposure limits set for the other hazards," said Manal Azzi, ILO Senior Specialist on occupational safety and health.

The share of global workers exposed to the most widespread hazard, surging temperatures, has risen by around 5 percentage points over the last two decades to 70.9 percent, the report said.

Other climate dangers often co-exist, creating a "cocktail of hazards," the report said, with UV radiation and air pollution each affecting 1.6 billion people.

Because a worker is likely to be exposed to multiple dangers at once, an ILO spokesperson said it was impossible to calculate exactly what portion of the 3.4 billion global workforce was at risk.

Climate-related hazards are being linked to a cancer, kidney dysfunction, and respiratory illnesses, leading to deaths or debilitating chronic conditions or disabilities.

Air pollution is the most deadly risk, causing some 860,000 work-related deaths among outdoor workers annually, the ILO report said. Excessive heat causes 18,970 occupational deaths each year and UV radiation kills 18,960 through non melanoma skin cancer, it said.

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"The greatest impacts will be felt by the working poor, those working in the informal economy, seasonal workers and workers in micro and small enterprises," the report said.

In some cases, the very technologies meant to slow climate change like solar panels and lithium-ion batteries for electric vehicles can end up producing new dangers since they contain toxic chemicals, it said.

The ILO plans a major meeting in 2025 of government, employer and worker representatives to provide policy guidance on climate hazards.