Reuters Photos: Conceptual

A young croupier trainee turns the roulette at a gaming table at the Cerus Casino Academy in Marseille November 6, 2013. Cerus Academy is the only school in France authorized to issue the official croupier certificate. REUTERS/Jean-Paul Pelissier (FRANCE – Tags: SOCIETY BUSINESS EMPLOYMENT)

Job offers are seen in this illustration in Milan April 3, 2012. Italy’s headline jobless rate has been running below the euro zone average, but analysts say the real challenge for Italy is to increase its chronically low rates of employment and participation in the labour market, which are among the lowest in the industrialized world, especially among women, the young and the elderly. REUTERS/Alessandro Garofalo (ITALY – Tags: BUSINESS EMPLOYMENT POLITICS)

A woman takes a picture of phrases written on a wall at a square in Sao Paulo July 3, 2014. The hoarding asks “Before I die I want to_.” leaving pedestrians to finish off the sentence. In a project called “On The Sidelines” Reuters photographers share pictures showing their own quirky and creative view of the 2014 World Cup in Brazil. REUTERS/Nacho Doce (BRAZIL – Tags: SPORT SOCCER WORLD CUP SOCIETY)

The word oil is pictured on an oil bank at a recycling yard in London March 2, 2011. Brent crude rose back close to two-and-a-half year highs on Wednesday as Libya warned of higher oil prices due to the crisis and its government forces fought rebels in the oil-rich east. REUTERS/Stefan Wermuth (BRITAIN – Tags: ENERGY POLITICS BUSINESS)

A labourer attaches iron rods to a column at the construction site of a flyover in Lahore May 26, 2011. REUTERS/Mohsin Raza (PAKISTAN – Tags: SOCIETY BUSINESS IMAGES OF THE DAY CONSTRUCTION)

Olive Ridley turtle hatchlings (Lepidochelys olivacea) sit in baskets and trays at the turtle camp La Gloria, before their release into the ocean in Tomatlan November 15, 2013. Twenty years ago, Mexico’s government implemented ecological plans to protect the sea turtles from being hunted for their leather and meat and established conservation areas and a pay system for local residents to protect turtle nests. Millions of baby turtles hatch on the shores in November and December, according to an environmental group. It is estimated that in 2012, there were 20 million newborns. Hatching season is still underway, but officials say they expect there will be even more turtles born this year. Picture taken November 15, 2013. REUTERS/Alejandro Acosta

The IAF Aerobatic Team flying IAI Tzukit jet aircraft create a “heart” during a ceremony for graduating Israeli Air Force pilots at Hatzerim Air Base, June 28, 2010. REUTERS/Baz Ratner (ISRAEL – Tags: MILITARY IMAGES OF THE DAY)

A sign marks the entrance to a job fair in New York October 24, 2011. High unemployment, not inflation, is the biggest problem facing the U.S. economy today, a top Federal Reserve official known for his hawkish views on inflation said on Monday. REUTERS/Shannon Stapleton (UNITED STATES – Tags: BUSINESS EMPLOYMENT)

People walk towards a train station in Tokyo August 4, 2009. REUTERS/Stringer (JAPAN BUSINESS EMPLOYMENT)

A hibiscus flower is seen on an ash-covered plant at Mardingding village in Karo district, Indonesia’s north Sumatra province November 19, 2013. The volcano continued to emit volcanic ash on Monday, throwing an 8,000m (26,247 ft)-high plume into the atmosphere, as thousands of residents fearful of more eruptions remained in temporary shelters, according to local media. REUTERS/Roni Bintang (INDONESIA – Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)

“Castellers de Barcelona” form a human tower during a demonstration at the festival of the patron saint of Barcelona “The Virgin of Mer?cy” at Sant Jaume square in Barcelona September 24, 2014 . REUTERS/Gustau Nacarino (SPAIN – Tags: SOCIETY TPX IMAGES OF THE DAY)

Qi Guangpu of China performs an aerial in the Men’s Aerials training during the FIS Snowboarding and Freestyle Skiing World Championships in Sierra Nevada, Spain, March 9, 2017. REUTERS/Paul Hanna/File Photo SEARCH “POY SPORT” FOR THIS STORY. SEARCH “REUTERS POY” FOR ALL BEST OF 2017 PACKAGES. TPX IMAGES OF THE DAY

A woman cycles as she carries baskets to sell in a market near Lapdaung mountain in Sarlingyi township, March 13, 2013. REUTERS/Soe Zeya Tun (MYANMAR – Tags: SOCIETY TPX IMAGES OF THE DAY) )

A bee collects nectar from a sunflower on a field near the northern Swiss town of Leibstadt July 9, 2012. Syngenta and Bayer, top producers of the pesticides blamed for a sharp fall in bee populations around the world, have proposed a plan to support bee health to try to forestall a European Union ban on the products. Picture taken July 9, 2012. REUTERS/Arnd Wiegmann (SWITZERLAND – Tags: ENVIRONMENT SCIENCE TECHNOLOGY AGRICULTURE ANIMALS BUSINESS)

A person holds pharmaceutical tablets and capsules in this picture illustration taken in Ljubljana September 18, 2013. Picture taken September 18. REUTERS/Srdjan Zivulovic (SLOVENIA – Tags: HEALTH)

Labourers install steel bars on the foundation of a residential construction site in Shenyang, Liaoning province June 29, 2010. REUTERS/Sheng Li (CHINA – Tags: BUSINESS CONSTRUCTION IMAGES OF THE DAY)

A woman releases a balloon into the air during the 20th anniversary of the closure of the Omarska detention camp in Omarska, August 6, 2012. Hundreds of former inmates released balloons with names of missing persons into the air during a ceremony marking its closure, commemorating around 800 people who died in the camp which housed approximately 5,000 people during the 1992 Bosnian War. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA – Tags: ANNIVERSARY OBITUARY POLITICS CONFLICT)

A man dodges tidal waves under the influence of Typhoon Usagi in Hangzhou, Zhejiang province, September 21, 2013. China’s National Meteorological Center issued its highest alert, warning that Usagi would bring gales and downpours to southern coastal areas, according to the official Xinhua news agency. Picture taken September 21, 2013. REUTERS/Chance Chan (CHINA – Tags: ENVIRONMENT TPX IMAGES OF THE DAY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA

Men hold placards offering temporal employment services in Glenvista, south of Johannesburg, October 7, 2010. REUTERS/Siphiwe Sibeko (SOUTH AFRICA – Tags: BUSINESS EMPLOYMENT)

Students of Shaolin Tagou Martial Arts School are suspended in mid-air as they practise in a dress rehearsal for a stunt performance which is part of the opening ceremony of the 2014 Nanjing Youth Olympic Games, at a stadium in Nanjing, Jiangsu province August 14, 2014. A total of 520 students took part in the performance named “Building the dream”, which will be performed during the opening ceremony of the Youth Olympic Games on August 16, local media reported. Picture taken August 14, 2014. REUTERS/Stringer (CHINA – Tags: SPORT SOCIETY OLYMPICS TPX IMAGES OF THE DAY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA

Muslim women offer Eid al-Adha prayers at a school ground in the southern Indian city of Chennai October 16, 2013. Muslims around the world celebrate Eid al-Adha by the sacrificial killing of sheep, goats, cows and camels to commemorate Prophet Abraham’s willingness to sacrifice his son Ismail on God’s command. REUTERS/Babu (INDIA – Tags: RELIGION SOCIETY TPX IMAGES OF THE DAY)