The chief executive of General Electric raked in a $37.3 million pay package last year, a large sum by any standard. But how much larger was it than the average pay of the 305,000 employees who helped General Electric earn billions in profits that year? The industrial giant did not disclose that comparison, and corporate America rarely reveals how the compensation of the chief executive stacks up against that of the workers in the ranks below. That will soon change. After a long delay and plenty of pushback from corporations, the Securities and Exchange Commission approved in 3-2 vote on...