1. Never, ever be late to a meeting
To think about it real terms, it does not usually matter if you are a few minutes late to everything. In practice, though, being late by so much as a minute annoys people - even if your being late causes them no trouble at all. Becoming known as someone who always keeps his appointments can pay off over the long run.
2. Whatever you do, do not miss a deadline
Many workers only treat deadlines as general targets. Working among such people, you will be able to stand out if you take every deadline seriously. A reputation as someone who is ever dependable will not only gain you respect, it will help you gain responsibilities that managers above you will not trust anyone else with.
3. Stay away from gossip, especially on the Internet
Most people do gossip; yet, when they catch other people doing the same thing, they judge them for it. Gossiping in person or leaving a trail by gossiping over a social network or email can be terrible for your image at work, should word ever get out. There is also always the risk that you will one day end up sending a piece of gossip to exactly the wrong person.
4. Do not be caught shooting the breeze
Socializing at work is an important way of making contacts, building relationships and getting things done. Yet, it always comes with the risk of being judged as a time waster.
5. Be good to those below you
While the people who take orders from you do not have the power to make trouble for you, their opinion of you does count. If you are respected by everyone below you, it will show in a way that your superiors will see. Common courtesy is a fundamental requirement of success.
6. Do not be too nice
While you do want to be helpful and polite, you need to make sure that you do not let your concern for others rule your life. Many people interpret niceness as a sign of weakness.