Integrity should permeate every aspect of your job, from how you deal with your clients to how you treat your co-workers and your superiors. It means doing the right things, at all times, even if no one is watching, much less your boss. Its greatest impact is seen in your relationships with the people around you, which is why integrity is seen as one of the most important ingredients of Trust.
Acting with integrity, also means behaving in a consistent manner. For example, if you are part of a team, your behaviour should be in tune with everyone, in accordance with a clear set of guidelines in working together toward a clear purpose.