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The race for visas to bring highly skilled workers into the U.S. begins on April 1.

That's when the federal government opens the application process for its coveted H-1B visas, which allow specialized workers, typically with a bachelor's degree or higher, to enter the country on a temporary basis.

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Bringing highly skilled immigrant workers into the U.S. isn't easy — there's stiff competition between tech outfits and consulting firms for the 85,000 new visas that will be issued.

The companies applying usually max out the visa allotment in a single day, submitting enough applications to send the process to a lottery.

Who's getting all the visas? Here are the top 10 companies that were approved for H-1B visas in the 2014 fiscal year, according to U.S. Citizenship and Immigration Services.

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You'll notice some trends: many of them specialize in outsourcing and several are based in India.

1. Tata Consultancy Services
Headquarters: Mumbai, India
Employees: 300,000
Services: Information technology, outsourcing, consulting
H-1B visas: 7,385

2. Cognizant Technology Solutions
Headquarters: Teaneck, New Jersey
Employees: 211,500
Services: Information technology, outsourcing, consulting
H-1B visas: 5,431

3. Infosys
Headquarters: Bangalore, India
Employees: 160,400
Services: Information technology, outsourcing, consulting
H-1B visas: 4,011

4. Wipro
Headquarters: Bangalore, India
Employees: 156,000
Services: Information technology, outsourcing, consulting
H-1B visas: 3,324

5. Accenture
Headquarters: Dublin, Ireland
Employees: 323,000
Services: Information technology, outsourcing, consulting
H-1B visas: 2,522

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6. Tech Mahindra
Headquarters: Pune, Maharashtra, India
Employees: 98,000
Services: Information technology, outsourcing, consulting
H-1B visas: 1,661

7. IBM India
Headquarters: Bangalore, India
Employees: estimated 150,000
Services: Information technology, outsourcing, consulting
H-1B visas: 1,357

8. Syntel
Headquarters: Troy, Michigan
Employees: 24,500
Services: Information technology, outsourcing, consulting
H-1B visas: 1,125

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9. IGATE
Headquarters: Bridgewater, New Jersey
Employees: 33,500
Services: information technology and outsourcing
H-1B visas: 930

10. HCL Technologies
Headquarters: Noida, Uttar Pradesh, India
Employees: 100,240
Services: Information technology, outsourcing, consulting
H-1B visas: 913

Visa Renewals

An H-1B visa is valid for three years and can be extended for three more, leading to a six-year lifespan in total. In addition to the new H-1B visas awarded each year, visas from past years can also be renewed.

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Here are the top 10 companies that were approved for H-1B renewals in the 2014 fiscal year:

1. Cognizant Technology Solutions
Visa renewals: 12,883

2. Infosys
Visa renewals: 5,130

3. Wipro
Visa renewals: 2,724

4. Tata Consultancy Services
Visa renewals: 2,218

5. Microsoft
Visa renewals: 1,615

6. HCL Technologies
Visa renewals: 1,393

7. Accenture
Visa renewals: 1,329

8. IGATE
Visa renewals: 1,203

9. Google
Visa renewals: 1,097

10. Intel
Visa renewals: 1,045

Ted Hesson was formerly the immigration editor at Fusion, covering the issue from Washington, D.C. He also writes about drug laws and (occasionally) baseball. On the side: guitars, urban biking, and fiction.