What are some important characteristics of a co-worker?

Nowadays, teamwork is an essential element of the society. We all work with people everyday. A co-worker is a person with whom we work closely and share tasks. In my opinion, the important characteristics of a co-worker should be as followed. 

First of all, an important character of a co-worker should be reliability. As we often have to encounter a lot of problems at work, it is a good thing to work with someone that we can always count on. A reliable co-worker can help us with problems that we cannot solve by ourselves. Also, if we happen to be absent from work, a reliable co-worker can always backup what we have been working on and make correct decisions even without us. 

Last of all, another important character of a co-worker should be responsibility. Indeed, no one would want an irresponsible person as his or her co-worker. It would be a nightmare if your co-worker does not do anything and leave everything for you to finish. On the other hand, a responsible co-worker not only do his own part of work, but also, as soon he finishes his own, helps you finish yours, which in turn enhances the efficiency of the work. A responsible co-worker can help others work more efficiently by giving others aid in addition to getting their part of job done. 

To summarize, as I have stated above, a good co-worker should be reliable and responsible. A co-worker that possesses these characteristics can certainly help enhance the progress of work and benefit his or her colleagues as well.