Effective communication is an important aspect throughout all aspects of life, but it is especially important when in a new job. This is because your communication, or even lack of communication could very likely change you or a co-workers life. For example, let's say a co-worker needed you to do something, and you couldn't do it, but didn't tell them, then they could get into trouble and potentially fired for not doing the work that they entrusted to you. In some cases, they'll blame you, and you can get fired.
