Workers of North Korea

North Korean employees work in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

North Korean employees work in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

North Korean employees work in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

A North Korean manager walks down an aisle as employees work in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

North Korean employees work in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: MILITARY POLITICS BUSINESS EMPLOYMENT)

North Korean employees work in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. The banner reads, "The first priority is high quality, the second priority is also high quality". REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

A North Korean employee works in front of an electronic sign displaying the projected daily output (90) and the current output (83) in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

North Korean employees transport a rack of finished products in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: MILITARY POLITICS BUSINESS EMPLOYMENT)

North Korean employees check finished products in a factory of a South Korean company at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

North Korean workers assemble jackets at a factory of a South Korean-owned company at the jointly-run Kaesong Industrial Complex, in Kaesong, North Korea, Thursday, Dec. 19, 2013. The Kaesong complex just north of the border is the last remaining inter-Korean rapprochement project. Its operations halted in April when Pyongyang withdrew its workers amid tension over North Korean threats of nuclear war. It reopened in September after North Korea toned down its rhetoric and began pursuing diplomacy with South Korea. (AP Photo/Kim Hong-Ji, Pool)

A North Korean employee works in a bank at the Joint Industrial Park in Kaesong industrial zone, a few miles inside North Korea from the heavily fortified border December 19, 2013. Kaesong, with investors from South Korea, was a rare source of hard currency for North Korea. It was established even though North Korea is technically still at war with South Korea, one of the world's richest countries, since the 1950-53 Korean War ended not in a treaty but a truce. Since it opened in 2004, the Kaesong complex has generated about $90 million annually in wages paid directly to the North's state agency that manages the zone. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: POLITICS BUSINESS EMPLOYMENT)

Hong Yang-ho (R), chairman of the Kaesong Industrial District Management Committee, takes a tour in a factory of a South Korean company with officials from the G20 Seoul Conference at the Joint Industrial Park in Kaesong, a few miles inside North Korea from the heavily fortified border December 19, 2013. North Korea hosted a group of foreign officials and journalists on Thursday in a rare opening of the industrial zone jointly run with the South, a week after the regime executed the powerful uncle of leader Kim Jong Un. North and South Korean officials also held meetings at the Kaesong complex on Thursday to discuss the operations of the factory park, their first contact since the purge of Jang Song Thaek, considered the second-most powerful man in the country. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: BUSINESS EMPLOYMENT POLITICS)

Officials from the G20 Seoul Conference look at miniature models of the Kaesong Industrial Complex (KIC) at the Kaesong Industrial District Management Committee office in Kaesong, a few miles inside North Korea from the heavily fortified border December 19, 2013. North Korea hosted a group of foreign officials and journalists on Thursday in a rare opening of the industrial zone jointly run with the South, a week after the regime executed the powerful uncle of leader Kim Jong Un. North and South Korean officials also held meetings at the Kaesong complex on Thursday to discuss the operations of the factory park, their first contact since the purge of Jang Song Thaek, considered the second-most powerful man in the country. REUTERS/Kim Hong-Ji (NORTH KOREA)

Officials from the G20 Seoul Conference visit a factory of a South Korean company at the Joint Industrial Park in Kaesong, a few miles inside North Korea from the heavily fortified border December 19, 2013. North Korea hosted a group of foreign officials and journalists on Thursday in a rare opening of the industrial zone jointly run with the South, a week after the regime executed the powerful uncle of leader Kim Jong Un. North and South Korean officials also held meetings at the Kaesong complex on Thursday to discuss the operations of the factory park, their first contact since the purge of Jang Song Thaek, considered the second-most powerful man in the country. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: BUSINESS EMPLOYMENT POLITICS)

North Korean employees prepare to greet officials from the G20 Seoul Conference at a factory of a South Korean company at the Joint Industrial Park in Kaesong, a few miles inside North Korea from the heavily fortified border December 19, 2013. North Korea hosted a group of foreign officials and journalists on Thursday in a rare opening of the industrial zone jointly run with the South, a week after the regime executed the powerful uncle of leader Kim Jong Un. North and South Korean officials also held meetings at the Kaesong complex on Thursday to discuss the operations of the factory park, their first contact since the purge of Jang Song Thaek, considered the second-most powerful man in the country. REUTERS/Kim Hong-Ji (NORTH KOREA - Tags: BUSINESS EMPLOYMENT POLITICS)