Not all sales people have a commission component in their compensation package. In fact, I would say most do not (especially outsideof the US). That said, the ones that do have commissions are often some of the most stressed out people you will find as they usually have quotas to meet. Most business travelers you will meet are average joes who are trying to make a buck. Some were lucky to get a job that allowed them to see things from a new perspective. Some are opportunists and some are people who think they are all that and want the world to know it. Those are the business travelers that nobody likes and who we call the DYKWIAs.