Sysco warehouse work has been around since a long time now, beginning in 1970. At that time, it managed to have sales more than $115 million. In the year 1996, Sysco was the third largest company in Houston, where it is headquartered. As of 2010, Sysco grew to $37 billion in sales. Today, Sysco does business with more than 400,000 customers and operates in more than 180 locations in the U.S.