A lawsuit against Indianapolis-based Celadon Trucking Services has been labeled class action, according to a ruling by U.S. District Judge Susan Webber Wright last week
, reports the Associated Press.

Former employees of Continental Express Inc., a Little Rock, Ark.-based trucking company that is now closed, claim Celadon violated the federal Worker Adjustment and Retraining Notification Act.

The WARN Act says companies with more than 100 employees are required to give a 60-day notice of a pending mass layoff or closure. Companies that fail to give notice may be held responsible for 60 days of wages per employee.

According to published reports, Celadon bought Continental Express for about $24 million in 2008, but the carrier claims it only purchased equipment, such as tractors, trailers and other vehicles, the AP reports. The workers argue that Celadon bought the company on Dec. 4, 2008, and were laid off Dec. 17, 2008.