While performing the duties of this job the employee is often required to stand, sit, use computers, read, write, type, use copy machines, file paperwork, use telephones, and utilize written and oral communication to interact with clients, co-workers, and customers. A function may be essential for any of several reasons, including: the job exists to perform that function, the employee holding the job was hired for his/her expertise in performing the function, or only a limited number of employees are available to perform that function.