CPT cannot be in a minor or previous major. CPT can be part-time (20 hours a week or less) or full-time (more than 20 hours a week). If you are authorized for part-time CPT, any on-campus employment and your CPT together cannot amount to over 20 hours of work a week, while school is in session (this includes assistantships and CASE Center employment). If you are authorized for full-time CPT, you should not have any additional on-campus employment, while school is in session. CPT is designed to provide work experience directly related and integral to a student's degree of study. It is not intended for general, ongoing work authorization. Traditional volunteer work (e.g. at a soup-kitchen, homeless shelter) does not require CPT. However any internship, even if it is unpaid, requires CPT authorization.