Integrity in the workplace often stems from moral and ethical behavior. Making sure there's no reason to question your conduct is one of the best ways to prove that you are an honest and dependable employee. Avoid using company products or equipment for personal use and submit exact receipts for travel or meal reimbursements. Don't over-promise what you can't provide and strive to meet deadlines. Work productively and cooperate during company meetings so you don't appear lazy or apathetic, and don't call in sick if you aren't. By exhibiting responsible behavior, you don't give co-workers or clients the opportunity to question your integrity.