I recently tried to buy another pair of mail-order jeans. The brand shall remain nameless out of respect for the company.
I ordered the same size as all my recent purchases. When the jeans arrived, they were way too long. I laid an older pair of the same marked size on top of them and the new jeans were about 3 inches longer. I sent them back and they called and said the jeans measured only about ½ inches longer than the label size. I asked for a “short” pair of the same label size. After a couple of weeks, they refunded my purchase price. 
The company seems to be sincere about their business practices, but the jeans they are getting from their manufacturer are putting them out of business.
I don’t believe the problem is limited to Dickies.
Here is a youtube video by someone who claims to be knowledgeable about the clothing business.
