Oracle's Larry Ellison was top-earning CEO with $96.1 million, compared to the average worker's pay of $34,645 last year.
The average worker made $34,645 last year, according to the group that represents over 50 trade unions.
Oracle (Fortune 500) CEO Larry Ellison's $96.1 million pay package topped the list, followed by $54.3 million earned by , Credit Acceptance Corp (.'s Brett Roberts and )Discovery Communications ( CEO David Zaslav's $50 million, according to the union's ) pay project.
The dip in Cook's pay was enough to lower the overall average for CEOs of top companies by 5% from 2011.
The discrepancy in pay between CEOs and the average worker has skyrocketed over the years, peaking in 2000, when the gap was 525 times. In 1980, CEO pay was 42 times that of the average worker.
The AFL-CIO each year highlights the pay disparity between workers and chief executives from companies that are part of Standard & Poor's 500 stock index.
Richard Trumka, AFL-CIO president, said he hopes the project will remind Washington leaders that most workers "continue to struggle."
"They struggle every day to make ends meet, their wages are stagnant, their companies are trying to take away their health care and pensions, and they're angry," Trumka said. "And very few them know what's happening with CEO (pay)."
The union wants regulators to enforce an outstanding rule from Wall Street reforms for publicly traded companies to reveal CEO pay compared to their average employees. The U.S. Securities and Exchange Commission has delayed efforts to craft that rule, in part because of heavy lobbying by companies.
The labor group unveiled an updated website database on Monday compiled from 327 companies based on SEC filings. The site will post CEO pay for all 500 companies as the data is made public.
Trumka himself makes $302,000 in total compensation, according to federal records, or 8.7 times the average worker.
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