Retail giant Walmart has the world’s largest number of employees.
Take a look at world’s 10 largest employers, according to a ranking by 24/7 Wall St.
Wal-Mart Stores
Rank: 1
Total employees: 2,200,000
Revenue: $476.3 billion
Walmart is the world's largest company by revenue in 2014. Founded by Sam Walton in 1962, it has over 11,000 stores in 27 countries.
G4S
Rank: 2
Total employees: 618,000
Revenue: $12.3 billion
A British multinational security services company, it has operations in around 125 countries.
Randstad Holding
Total employees: 595,730
Revenue: $22.8 billion
Founded in the Netherlands in 1960 by Frits Goldschmeding, Randstad Holding is world's second-largest HR service provider , with services in 39 countries.
Volkswagen
Total employees: 555,097
Revenue: $271.3 billion
Founded in 1937, Volkswagen is the biggest automaker in both Germany and Europe. Some of the world’s best selling cars are from Volkswagen’s stable.
PetroChina Co Ltd
Total employees: 544,083
Revenue: $373.0 billion
PetroChina Company Limited is a China’s biggest oil producer.
Compass Group
Total employees: 506,699
Revenue: $28.4 billion
Compass Group plc is the largest contract food service company in the world with services in over 50 countries.
Agricultural Bank of China
Total employees: 478,980
Revenue: $68.2 billion
Agricultural Bank of China is one of the ‘Big Four’ banks in China.
Founded in 1951, Agricultural Bank of China is China's third largest lender by assets.
ISS A/S
Total employees: 464,184
Revenue: $14.5 billion
Founded in Copenhagen, ISS (Integrated Service Solutions) offers cleaning, property, catering, security services and facility management.
Industrial and Commercial Bank of China
Total employees: 441,902
Revenue: $ 91.1 billion
Industrial and Commercial Bank of China is the largest bank in the world by total assets and market capitalisation. 
McDonald’s Corporation
Total employees: 440,000
Revenue: $28.1 billion
Brothers Richard and Maurice McDonald started the business in 1940.
McDonald's Corporation is the world's largest chain of hamburger fast food restaurants, serving around 68 million customers.
