An unknown number of miners—perhaps as many as 40—were buried alive as an illegal gold mine collapsed late on the night of April 30 at El Palmar, in Colombia's southern department of Cauca. Local campesinos spent May Day volunteering with Santander de Quilichao municipal brigades in a desperate effort to unearth the victims—none of whom are believed to survive. Thus far, only three bodies have been recovered, according to local Red Cross workers. Local residents said the "owners" of the mine were able to escape, but it is still unlcear exactly who they are.

Workers in several Iranian industrial centers marched on May Day in defiance of official attempts to shut them down. In the western city of Sanandaj, placards called for the release of political prisoners and detained labor leaders. Employees of the Khuzestan Pipe Factory in Ahwaz, also in the country's west, gathered in front of the governorate office with placards reading "Deprived workers in Khuzestan Pipe factory have not been paid for 6 years," and "Deprived workers in the Ahwaz City Hall have not been paid for 5 years." Security forces surrounded the march in order to prevent the spread of protests. Similar marches, bringing out hundreds, were reported from Khorramabad, Saveh and Zanjan, although a hevay police presence in the central square of Qom prevented workers from gathering there. Quick arrests also shut down an attempt by transit workers to march in the capital. Ebrahim Madadi, a leader of the Union of the Workers of Tehran and Suburbs Bus Company, is among those detained. (PMOI, May 3; NCRI, RFE/RL, May 1)

Clashes rocked central Istanbul on May 1 as Turkish protesters attempted to defy a government ban on May Day rallies at the city's iconic Taksim Square. Police fired tear gas, water cannon and rubber bullets to demonstrators, some of whom responded with hurled fire-bombs. Authorities shut parts of the city's public transport system, erected steel barricades and deployed thousands of riot police to block access to the square. Only a handful of trade union leaders were allowed into the area under police guard to lay flowers commemorating the deaths of at least 34 people there during a May Day gathering in 1977.

Bypassing Parliament, on April 16 Haitian president Michel Martelly ("Sweet Micky") issued a decree setting new minimum wage levels for different categories of employees, to go into effect on May 1. The decree basically follows recommendations made on Nov. 29 by the tripartite Higher Council on Wages (CSS), with the minimum wage ranging from 260 gourdes (US$6.60) a day in a category that includes bank employees, electricians and telecommunication workers to just 125 gourdes (US$3.17) a day for domestic workers. The decree confirmed the most controversial of the CSS's recommendations, a 225 (US$5.71) gourde daily minimum for hourly workers in the country's garment assembly plants, which produce for export and benefit from tax and tariff exemptions; this is just a 25 gourde increase over the minimum in effect since October 2012 under a 2009 law. For piece-rate assembly workers—the majority of the sector's work force—the rate remains at the October 2012 level, 300 gourdes (US$7.61) a day. (Haïti Libre, April 19)

There is something fundamentally wrong about the fact that there are apparently a whopping 400 tourists on Mount Everest at any one time. That's what came to light April 23, when 16 sherpa guides were killed in an avalanche. The sherpas went on strike over low pay for dangerous work, their walk-out leaving 400 jet-setters stranded on the mountain and jeopardizing the 2014 climbing season. About half the sherpas have descended from the base camp where they operate, and Ang Tshering Sherpa, president of the Nepal Mountaineering Association, said more will likely follow. (BBC News, April 25; BuzzFeed, April 23)

Workers at six out of ten factories in Dongguan owned by Taiwanese multinational Yue Yuen Industrial Holdings have been on strike since April 14 after discovering the company has not been paying its 70,000 employees legally required levels of social security and housing contributions. At least 10,000 Yue Yuen workers took to the streets the day the strike began. Yue Yuen produces shoes for sportswear brands including Nike, Adidas and Asics. The strike is emblematic of a new wave of labor struggles in Guangdong, where Dongguan is located, and other industrial regions of China. Samsung, Lenovo, Nokia and Wal-Mart are among the companies hit by stoppages in recent weeks. Strikes are up by almost one-third in the first quarter of 2014 compared to the same period last year, according to research by Hong Kong-based China Labour Bulletin. The group's findings also reveal "a more forceful response from the local authorities," with a four-fold increase in police interventions and a sharp rise in arrests. This trend is confirmed by recent trials of worker activists and strike organizers. (Bloomberg, April 19; China Worker, April 17; China Labour Bulletin, April 14)

The offices of the Cali Municipal Workers Synidicate (Sintraemcali), located in the center of the Colombian industrial city, was attacked with hurled incendiary bombs April 16, causing damage to the facade and plumbing of the building. Sintraemcali called the bombing a "terrorist attack," and pledged to file a complaint with the Inter-American Human Rights Commission. The attack came five days after a judge in Bogotá ordered the president of the republic, Juan Manuel Santos, to issue a formal pardon to members of Sintraemcali, the Colombian University Workers Syndicate (Sintraunicol) and the Bogotá Telecommunications Workers Synidate (Sintratelefonos), who had been accused by former president Álvaro Uribe Vélez of being linked to terrorist groups and constituting a "Brotherhood of Terrorism." (Radio Caracol, Etorno Inteligente, April 16)

A large part of Argentina's labor movement participated a 24-hour general strike on April 10 to demand increases in wages and pensions and to protest the economic policies of President Cristina Fernández de Kirchner. With support from the Automatic Tramways Union (UTA) and three airline workers' unions, the strike shut down surface trains, subways, air service, schools and businesses in many parts of the country. Union leaders said the action was 90% effective, and the Argentine business consulting firm Orlando Ferreres & Asociados S.A. set the losses for the day at almost $1 billion. Government officials and Fernández supporters downplayed the significance of the strike, charging that relatively few workers actively participated and that people stayed home only because transportation was cut off by the UTA and by roadblocks that leftist parties and groups had set up.