Group portrait of boys working in #9 Breaker Pennsylvania Coal Company, Hughestown Borough, Pittston, PA, 1908. (Photo by Lewis W. Hine/Buyenlarge/Getty Images)

One of the small boys working in the JS Farrand Packing Company carries a heavy load, Baltimore, MD, 1911. (Photo by Lewis W. Hine/Buyenlarge/Getty Images)

A young shoe shiner as he works on a customer?s shoe in City Hall Park, New York, New York, July 25, 1924. (Photo by Lewis W. Hine/Buyenlarge/Getty Images)

View of two young boys assisting in the housing of tobacco in the barn of WL Fugate, Hedges Station, KY, 1916. The boys attend Schoolsville School but it has not yet opened on account of repairs. (Photo by Lewis W. Hine/Buyenlarge/Getty Images)

Hridoy, 7, works at a balloon factory on the outskirts of Dhaka November 26, 2009. About 20 children are employed at the factory and most of them work for 12 hours a day. The weekly wage is 150 taka ($2.14) for the children. (Photo by Andrew Biraj/Reuters)

5-year-old Rina Kumari rubs her eye while cracking stones on the banks of Mahananda river in Siliguri, northeast India, March 5, 2005. Over 400 million people in India live below the internationally agreed poverty line (living on less than US $1 per day). According to estimates, several hundred thousand children work as labourers and beg on the streets in India. (Photo by Desmond Boylan/Reuters)

Afghan boy Abdul Wahab works in a blacksmith's shop in Kabul December 14, 2010. Wahab is one of about 1.2 million Afghan children in part or full time work, the government says, in a country where war, poverty, widespread unemployment and a preference for large families have created a huge underage labour market. (Photo by Omar Sobhani/Reuters)

Bangladeshi girl Sharmin, 13 years old, looks into the camera as she works at a plastic recycling factory as a boy plays on a heap of bottles in Dhaka, Bangladesh, Thursday, June 12, 2014. June 12 marks the “World Day Against Child Labor”, that was initiated in 2002 by the International Labor Organization to highlight the plight of child workers across the world. (Photo by A.M. Ahad/AP Photo)

Children fill up empty cigarettes manually with locally grown tobacco in a small bidi (cigarette) factory at Haragach in Rangpur district, Bangladesh July 11, 2013. According to a 2012 study by US-based NGO, Campaign for Tobacco-Free Kids, over 45,000 people in Bangladesh are employed in manufacturing inexpensive cigarettes known as bidis and this number includes ìmany women and children working in household based establishments where they make low wages and live in poverty. A 2011 research paper about bidi workers in Bangladesh, published in the journal Tobacco Control, says that working conditions can involve poor ventilation and exposure to tobacco dust, which can cause a range of health problems including respiratory and skin diseases. International attention has been focused on workersí safety in Bangladesh since the disaster at Rana Plaza, a garment factory complex which collapsed in April, killing 1,132 workers. (Photo by Andrew Biraj/Reuters)

An Ivorian child welds in a wrought iron workshop in Abidjan June 15, 2005. Child labour is still prevalent across Africa, as the continent commemorates the Day of the African Child on Thursday. June 16 marked the start of an uprising by the schoolchildren of Soweto near Johannesburg in 1976 that formed a significant turning point in South Africa's struggle for liberation from apartheid. (Photo by Luc Gnago/Reuters)

An illegal immigrant boy from Myanmar collects plastic at a rubbish dump site near Mae Sot December 22, 2009. Despite terrible living conditions and the fear of being sent back to their country, several hundred illegal immigrants from Myanmar live and earn an average of $1 per day collecting plastic at the rubbish dump near the border town of Mae Sot. Myanmar's long-standing political crisis has forced millions of people to cross the border for a better and safer life. The first refugees arrived and set up camps in the Myanmar-Thailand border in 1984. Now, there are over 140,000 refugees in nine official camps along Thailand's western border. Many more are expected to be in unofficial settlements. (Photo by Damir Sagolj/Reuters)

Hazrat 7, works at a brick-making factory in Jalalabad December 17, 2013. (Photo by Parwiz Parwiz/Reuters)

Boys carry sacks of animal feed on their backs on the outskirts of Kabul November 14, 2012. (Photo by Mohammad Ismail/Reuters)

Ali Jan, 13, sells biscuits and sweets at Karachi's Clifton beach July 10, 2011. (Photo by Athar Hussain/Reuters)