The fact that workers with expense accounts still feel they’re getting paid so little that they deserve to commit fraud says something about that stratum of employee.
Pretty much anyone who travels has to submit receipts. Most people who travel are not making bank. They're the people who set up and stand at convention booths, sales staff support, assistants, videographers, etc. Also, most travel is a miserable ordeal. I'm not saying it's okay to commit fraud, but let's not equate the hourly employee "re-creating" his lost lunch receipt with a 6-figure income.