Top 10 Companies for Leaders

Revenue¹: More than $1 billion³
No. of employees: 14,000
CEO: Ian Davis, managing director
Top alumni: Lou Gerstner Jr., chairman of Carlyle Group; Stephen Green, chairman of HSBC Holdings

Groom Global Talent. With offices in 45 countries and business that's rarely nation-specific, global cross-pollination of employees is essential to this firm's mission. In 2007, 2,500 consultants will work full-time on projects outside their home country. Come January, McKinsey will launch a program that allows employees to work 12- to 24-month stints in two foreign markets. A Scandinavian building a career in tech might spend a year in Silicon Valley and one in Korea before returning with a broader perspective and an expanded network.

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