Since the University's faculty members are not unionized, the University has never undergone a teacher's strike like the one occurring at Temple University, according to Deputy Provost Richard Clelland. Temple faculty members called for the strike, which began Tuesday morning, after that university's administration asked them to contribute to the faculty health plan. Temple teachers are also demanding a pay increase. Last spring some of the University's teaching assistants held a "teach-in" on College Green to call attention to their importance to the University. The two-day protest, called Graduate Teaching Awareness Days was informal, since graduate students at the University are not unionized. The University has a formalized Faculty Grievance procedure for faculty members who have complaints. Clelland said that the most common source of grievances is tenure denial.