Here's a look at how people work against all odds for a livelihood.
Rescue workers try to tow a dead Bryde's whale, as identified by the Aqualung Institute, near Sao Conrado beach in Rio de Janeiro.
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A day in the life of workers around the world
Image: Fabian Bimmer/Reuters.A steel-worker is pictured at a furnace at the plant of German steel company Salzgitter AG in Salzgitter, Lower Saxony.
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A day in the life of workers around the world
Image: Krishnendu Halder/Reuters.A worker test drives a car in the shape of a heels on a road in the southern Indian city of Hyderabad.
The shoe is part of a ladies series of creations by Indian car designer Sudhakar Yadav to mark the International Women's Day and the car can run at a maximum speed of 45 kph (28 mph).
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A day in the life of workers around the world
Image: David Gray/Reuters.A worker prepares to milk cows on a 40-hectare farm managed by New Zealand dairy export giant Fonterra Co-operative Group in Yutian County, Hebei Province around 150 km (93 miles) southeast of Beijing .
The dairy farm is part of a new international investment strategy by Fonterra, the world's largest dairy cooperative, that involves the building and operating of its own large-scale dairy farms, so it can be certain of the quality of the dairy products it sells.
The investment comes after Fonterra's original NZ$200 million investment in China with state-owned partner Sanlu, that collapsed in 2008 following revelations that its baby formula was fatally contaminated by the chemical compound melamine.
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A day in the life of workers around the world
Image: Sukree Sukplang/Reuters.A local worker paints colorful sculptures in Nong Sanoe handicraft village in Nakhon Ratchasima province, northeast of Bangkok.
Sculptures are painted in bright colors and are popular with local tourists. The village of Nong Sanoe is centre to a thriving pottery industry that maintains the traditions of centuries -- and the beneficiary of a programme established by ousted prime minister Thaksin Shinawatra.
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A day in the life of workers around the world
Image: Phil Noble/ReutersWorkers move a giant Tyrannosaurus Rex model into position at Chester Zoo in Chester northern England.
The robotic model is one of 19 replica dinosaurs that form the Dinosaurs Bite Back exhibition that opens at the zoo on April 1.
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A day in the life of workers around the world
Image: Olivia Harris/Reuters.A worker poses for a photograph with bicycles for officials for the London 2012 Olympics in the UPS warehouse in Tilbury, southern England.
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A day in the life of workers around the world
Image: Mike Hutchings/Reuters.Former gold miners listen to speakers at a registration meeting in Bizana in South Africa's impoverished Eastern Cape province.
Hundreds of migrant workers from across southern Africa with suspected lung disease are coming forward to launch a class action lawsuit against South Africa's giant gold mining houses.
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A day in the life of workers around the world
Image: Sukree Sukplang/Reuters.A worker finishes moulding a clay statue of a small child in Dan Kwian pottery village in Nakhon Ratchasima province, northeast of Bangkok.
Thai potters work to keep an ancient tradition alive in Nakhon Ratchasima. The Dan Kwian pottery village is part of the One Tambon One Product (OTOP) scheme, which began in 2001 to promote local handicrafts at the grassroots level.
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A day in the life of workers around the world
Image: Michaela Rehle/Reuters.A worker mounts 320 square metres of solar panels on the roof of a farmstead barn in Binsham near Landshut.
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A day in the life of workers around the world
Image: Reuters.A rescue worker rappels from a coast guard helicopter over empty Italian tanker Gelso M that ran aground on rocks in bad weather on the Sicilian coast, near Siracusa.
The 127-metre-long (415-feet-long) Gelso M was heading for the Sicilian port of Augusta, home of an oil refinery and chemical complex, to take on fuel.
The coastguard said the tanker, listed as an oil/chemical tanker, was not carrying cargo at the time of the accident.
The ship had taken on water in its engine room and plans were being made to move it from the rocks, the coastguard said.
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A day in the life of workers around the world
Image: Sukree Sukplang/Reuters.A worker begins decorating a Buddha statue in Nong Sanoe handicraft village in Nakhon Ratchasima province, northeast of Bangkok.
Nong Sanoe is a handicraft village specializing in clay statues.
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A day in the life of workers around the world
Image: Erik De Castro/Reuters.An Afghan working in a US military base catches a brick tossed by a fellow worker as they repair barracks for US soldiers at Forward Operating Base Joyce in Kunar province, eastern Afghanistan.
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A day in the life of workers around the world
Image: Romeo Ranoco/Reuters.A worker of Globe Telecoms installs internet cables near electric posts in Manila.
Local telecom firms, facing a saturated market for mobile phones, are banking on growth in broadband and data services to fuel future growth, driven partly by an expanding outsourcing and call center industry in the country.
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A day in the life of workers around the world
Image: Chris Helgren/Reuters.Workers are suspended by ropes on the side of Tower Bridge, in London.
Preparations are continuing ahead of the Olympic Games, and Queen Elizabeth's Diamond Jubilee which will see a seven-mile flotilla of 1,000 ships sail down the River Thames on June 3, 2012, in one of the biggest and most spectacular events ever seen in London.
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A day in the life of workers around the world
Image: Romeo Ranoco/Reuters.A worker arranges tuna fish inside a van before delivering them to a wet market for sale in Manila
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A day in the life of workers around the world
Image: Thomas Peter/Reuters.A worker fixes a traffic light at a junction in Berlin.
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A day in the life of workers around the world
Image: Rupak De Chowdhuri/Reuters.Workers carry a packed basket of vegetables at a wholesale vegetable market in Kolkata.
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A day in the life of workers around the world
Image: Tim Chong/Reuters.Workers on a cherry picker clean the exterior of the ArtScience Museum at Marina Bay Sands in Singapore.
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A day in the life of workers around the world
Image: Ki Price/Reuters.Workers polish the roof in the new Kings Cross rail station redevelopment in London.
The 500 million pound ($785 million) redevelopment of the western concourse will more than double the station's capacity in time for the Olympic games and opens to the general public.
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A day in the life of workers around the world
Image: Mike Blake/Reuters.A construction worker builds a frame for a new house at a development area in San Marcos, California.
Permits for homebuilding neared a 3.5 -year high in February, suggesting a budding recovery in the housing market was still on track even though groundbreaking activity slipped.
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A day in the life of workers around the world
Image: Mohamed Nureldin Abdallah/Reuters.A bulldozer carries Chinese workers to the White Nile Sugar Factory in El Diwaym.
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A day in the life of workers around the world
Image: Danish Siddiqui/Reuters.A worker uses an angle grinder to make an iron pan at a workshop in an industrial area in Mumbai.
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A day in the life of workers around the world
Image: Kimimasa Mayama/Reuters.Tokyo Electric Power Co.'s (Tepco) employees are seen during a media tour by bus to damaged reactor buildingsat the emergency operation center of the tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture.
Members of the foreign media were allowed into the plant on Tuesday ahead of the one-year anniversary of the March 11, 2011 tsunami and earthquake which triggered the world's worst nuclear crisis since Chernobyl.
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A day in the life of workers around the world
Image: Ronen Zvulun/Reuters.Workers attach a figure onto a float at a sculpture and display factory which is also manufacturing floats for a parade celebrating the upcoming Jewish holiday of Purim, near Tel Aviv.
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A day in the life of workers around the world
Image: Hereward Holland/Reuters.An oil worker turns a spigot at an oil processing facility in Palouge oil field in Upper Nile state, following a dispute with Sudan over transit fees.
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A day in the life of workers around the world
Image: Jorge Dan Lopez/Reuters.A health worker fumigates outside the morgue where bodies of inmates who died in the Comayagua jail fire lay in Tegucigalpa.
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A day in the life of workers around the world
Image: Athar Hussain/Reuters.A man assembles a ferris wheel for a funfair festival in Karachi.
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A day in the life of workers around the world
Image: Srdjan Zivulovic/Reuters.A worker fills the fuel tank on an EasyJet Airbus aircraft in Ljubljana's airport Brnik.
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A day in the life of workers around the world
Image: Radu Sigheti/Reuters.Workers carry new cables to replace those damaged by snowfall near Dambroca village, near Buzau town, 110 km (67 miles) northeast of Bucharest due to icy weather across Europe.
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