Workers are gathering in cities around the world to mark International Labour Day, with some demonstrations, such as those in Istanbul, Turkiye, turning to scuffles with police.

Trade Unions are calling for solidarity and the protection of workers’ rights as the United States-Israeli war on Iran and rising energy costs raise concerns about the global economy.

“Working people refuse to pay the price for Donald Trump’s war in the Middle East,” the European Trade Union Confederation, which represents 93 trade union organisations in 41 European countries, told the media. “Today’s rallies show working people will not stand by and see their jobs and living standards destroyed.”

Josua Mata, leader of the SENTRO umbrella group of workers’ groups in the Philippines, said: “Every Filipino worker now is aware that the situation here is deeply connected to the global crisis.”

Renato Reyes, a leader of the left-wing political group Bayan in the Philippines, told The Associated Press: “There will be a louder call for higher wages and economic relief because of the unprecedented spikes in fuel prices.”

In Indonesia, Said Iqbal, president of the Indonesian Trade Union Confederation, told reporters: “Workers are already living pay cheque to pay cheque.”

Some of the largest demonstrations are being held in South America, including in Chile, Bolivia and Venezuela. In Argentina, angry workers protested on Thursday in the capital of Buenos Aires over President Javier Milei’s recent overhaul of long-held labour protections.

In Cuba, the foreign ministry held a gathering on Thursday in defiance of what it called the US’s “aggressions, threats, intensified blockade, and energy siege”.

On Friday, Cubans are expected to mark International Labour Day with a mass rally and a march in Havana.

In many countries, Labour Day rallies attract large crowds because May 1 is a public holiday. In the Turkish city of Istanbul, roads around Taksim Square were closed to make way for marches during the day. Later on Friday, demonstrators clashed with police, international media reported.

In France, where most people have the day off for May Day, workers’ unions using the slogan “bread, peace and freedom” called for protests in Paris and other cities.

Fears of a global recession are looming over Labour Day rallies at a time when income inequality is growing.

In Gaza, Palestinian workers have cancelled May Day events because of the economic crisis caused by Israel’s genocidal war on Gaza and poor conditions on the ground .

The Palestinian General Federation of Trade Unions said that about 550,000 workers across Gaza and the West Bank have no income and that the situation is unprecedented.

The International Trade Union Confederation has reported that at least four CEOs of major corporations each pocketed more than $100m in pay and bonuses last year, while many workers are facing potential job cuts.

Workers’ rights coalitions are calling for urgent action to curb extreme wealth. They want governments to impose higher, fairer taxes on the wealthiest and limit excessive executive pay.

While Labour Day began in the US, when workers protested for an eight-hour workday in the 1880s, the US does not count May Day as a public holiday.

However, an umbrella group of activist and workers’ groups known as May Day Strong has called for protests under the slogan, “workers over billionaires”. Hundreds of demonstrations and marches have been planned across the US.