Today, Challenger Gray and Christmas announced that more than 352,185 people have been fired since the year began.

Although that number has improved from the spring, cuts continue to mount as employers look to trim costs.

Business Insider dug through corporate filings, press releases, and data with the help of Bloomberg to assemble a list of the North American companies that have been hardest hit by layoffs.

Figures are based on announced numbers, meaning cuts may be partially underway or set to start later this year.