Communicate with the client or employer about job specs and questions. Know the ins and outs of a variety of word processing apps. Use a computer to key in assignments. Proofread finished work and correct errors in spelling, grammar, and punctuation. Print and make copies of finished work. Mail, deliver, or electronically transmit completed assignments to the client or employer. File finished documents. Invoice clients or submit a time report to an employer. Meet client or employer deadlines.