But university faculty have never fully been given collective bargaining rights or the right to strike. See:
The policy chiefs of the ruling Democratic Party of Japan and the opposition Liberal Democratic Party and New Komeito have agreed to cut the salaries of national government employees by an average of 7.8 per cent for two years beginning in fiscal 2012. The cuts will include a retroactive 0.23 per cent cut extending back to April 2011, in line with a figure proposed by the National Personnel Authority. Funds saved through the salary cuts--totaling about 588 billion yen--will be used for the reconstruction of areas devastated by the Great East Japan Earthquake.