By Douglas A. McIntyre
Eleven American companies have laid off a total of nearly 600,000 people in the past two decades. Each also fired a large number of employees at one time to earn it a place among the largest corporate layoffs in modern American history.
According to information 24/7 Wall St. has reviewed, large layoffs are almost exclusively the result of two conditions. They happen in industries near the end of their most successful periods, or because of difficult economic conditions.