A woman labourer takes a break with her child at a brick factory in Jammu, May 1, 2012. May Day is being marked across the world Tuesday. (AP)Workers march on a street during a May Day rally to call for a minimum wage law in Kuala Lumpur, Malaysia. (AP)Workers chant slogans during a May Day rally in Kuala Lumpur, Malaysia. (AP)Cambodian garment factory workers march to mark May Day in Phnom Penh, Cambodia. (AP)Thais labourers hold national flags during a May Day rally in Bangkok, Thailand. (AP)Workers raise their hands before the start of a marathon to mark May Day at the Olympic Stadium in Seoul, South Korea. (AP)

A woman pushes a handcart at a brick factory on the outskirts of Jammu. (AP)

A worker walks past a brick factory on the outskirts of Jammu. (AP)

Workers load bricks onto a truck at a brick factory on the outskirts of Jammu. (AP)

A woman labourer pushes a handcart at a brick factory on the outskirts of Jammu. (AP)

Workers carry firewood, as smoke rises from a brick factory on the outskirts of Jammu. (AP)

Sex workers walk in a rally demanding 'Rights of Work' for their profession on the eve of May Day in Kolkata. (AP)

Palestinian workers wait in line to cross the checkpoint between the West Bank town of Bethlehem and Jerusalem. (AP)

A worker holds a placard reading "Long Live Workers" during a May Day rally in Kuala Lumpur, Malaysia. (AP)

Workers march on a street during a May Day rally to call for a minimum wage law in Kuala Lumpur, Malaysia. (AP)

Workers chant slogans during a May Day rally in Kuala Lumpur, Malaysia. (AP)

Cambodian garment factory workers march to mark May Day in Phnom Penh, Cambodia. (AP)

Thais labourers hold national flags during a May Day rally in Bangkok, Thailand. (AP)

Workers raise their hands before the start of a marathon to mark May Day at the Olympic Stadium in Seoul, South Korea. (AP)