Much of the work in a law office can be done by paralegal assistants, also called legal aides or simply paralegals, who work alongside licensed lawyers. Often a paralegal is trained in a narrow field and then entrusted with it. In this respect, paralegals are similar to paraprofessionals in other fields, such as engineering. Paraprofessionals used to be trained in the office itself, but today it's common to study for a paraprofessional certificate or degree at a community college or university.