Your job as an administrator is to oversee and conduct the day-to-day administrative needs of a company or department. Duties vary by employer, as administrators may work in a specific department, such as human resources and payroll, or in a general office manager or receptionist role. Your responsibilities can range from answering phone calls and greeting guests to allocating assignments and training new employees. Just as your duties differ based on the role, so do the necessary skills and qualifications.