I disagre with my esteemed colleague. The AMCAS application calls this category: Experience and there's space for 15 entries. "Paid employment, non-military" is one category and it is usually one with the greatest number of hours of involvement.
Any job does require responsibility and a strong work ethic. Having a job similar to the jobs some people do for a lifetime also gives you some insight into the lives of patients you'll care for someday. A job in a bank involves customer service, careful observation and accuracy. Those are all skills that are in demand in medicine. You may also have had times when you had to pitch in to help another employee or to work as part of a team. Those are good experiences to have had, too. If you've had the misfortune of being in the midst of a crisis at work and stayed cool, that is very valuable experience, too.