An office runner carries out a variety of administrative duties at an office. These duties include carrying messages or documents to other people in the office or in other buildings, collecting and sorting incoming mail, and ensuring that common areas, such as the kitchen or break room, remain clear throughout the day. The qualifications for the job vary by industry, but you will need to have a variety of skills and experience for the career. You should have strong attention to detail and the ability to take directions, along with previous work experience in office administration.