The University of Waterloo operates the largest postsecondary co-op program of its kind in the world, with nearly 20,000 co-op students enrolled over three semesters in more than 120 programs. The William M. Tatham Centre for Co-operative Education and Career Action offers co-op students, non-co-op students, alumni, employees and post-docs guidance through the employment process and in taking next steps in their career. In 2016, more than 6,700 employers from over 60 countries conducted more than 76,900 interviews through teleconference, webcam/Skype or group interviews in one of the 130 interview rooms or 37 phone/webcam stations at the Tatham Centre.