Internships exist in a wide variety of industries and settings. An internship can be paid, unpaid, or partially paid (in the form of a stipend).^[5][6] Internships may be part-time or full-timeand are usually flexible with students schedules. A typical internship lasts between one and four months,^[7] but can be shorter or longer, depending on the organization involved. The act of job shadowing may also constitute interning.

• Paid internships are common in professional fields including medicine, architecture, science, engineering, law, business (especially accounting and finance), technology, and advertising. Work experience internships usually occur during the second or third year of schooling. This type of internship is to expand an intern’s knowledge both in their school studies and also at the company. The intern is expected to bring ideas and knowledge from school into the company.
• Work Research, Virtual Research (graduation) or dissertation: This is mostly done by students who are in their final year of school. With this kind of internship, a student does research for a particular company. The company can have something that they feel they need to improve, or the student can choose a topic within the company themselves. The results of the research study will be put in a report and often will have to be presented.
• Unpaid internships are typically through non-profit charities and think tanks which often have unpaid or volunteer positions.
• Partially Paid internships is when students are paid in the form of a stipend. Stipends are typically a fixed amount of money that is paid out on a regular basis. Usually, interns that are paid with stipends are paid on a set schedule associated with the organization.

Another type of internship growing in popularity is the virtual internship, in which the intern works remotely, and is not physically present at the job location. It provides the capacity to gain job experience without the conventional requirement of being physically present in an office. The internship is conducted via virtual means, such as phone, email, and web communication. Virtual interns generally have the opportunity to work at their own pace.