A contractor is someone who is hired to build something. As a contractor at a building site, it is highly recommended you keep your hard hat on at all times.
When you think of contractor, you may picture construction sites; however, the word has other meanings as well. Legally, if you sign a contract to perform a specific job then you are what is known as a contractor. When there are not many full-time jobs available for workers, sometimes the only option is to become a freelance contractor, which might mean that you only work part-time or when needed.