There is no time limit. Most of the time, the Co-op Office has more jobs than it has students, and students sometime are not flexible in the jobs that they want. As a UTC co-op student you are required to work with only one employer. That is one reason that the co-op program is different from an internship. Students pursuing internships may work with more than one employer during their college career by applying to a variety of employers.
Internships vary from employer to employer in length of time and type of internship.
Students may conduct their own job search or assist their coordinator in the search. After final approval you must follow the regular co-op steps to receive credit. It depends on the requirements stated in the job description. However, alternating co-op positions require a three semester commitment. Student contact from the employer varies.