Some 60 retired "exceptional" professors who had been re-employed won't get further extension following an order issued by the government on Wednesday.
Another 30 retired professors who had undergone the screening process and were set to be re-employed will be hit by the order as well.
The order stops all fresh re-employments as well as extension of the tenure of re-employed teachers.
The higher education department issued the order following complaints that some universities had misused a provision that allows the institutes to re-employ retired "exceptional" teachers.
A provision in a 1979 order allows universities to retain exceptionally good teachers by re-employing them after retirement.
When university teachers reach the retirement age of 60, they can apply to vice-chancellors for re-employment. The application, along with the teacher's credentials, is forwarded to the board of studies in his/her subject. If the board approves it, the application is forwarded to the syndicate in case of Calcutta University and executive council for others, such as Jadavpur and Burdwan universities.
If the application is approved, the teacher has to appear before a screening committee of experts in his/her subject for an interview. The re-employment is based on the committee's report. The initial term is two years. The same process has to be followed again for an extension by another years.
The Jadavpur University authorities issued three letters this week, re-employing a teacher and extending the tenure of two re-employed teachers.
The letter were withdrawn soon after the government issued the order on Wednesday afternoon, a university official said. "If they are allowed to join it could amount to violation of the government order. We will take a call based on what the department says in its next order."
Education minister Partha Chatterjee had on November 17 announced the suspension of the provision.
Jadavpur University has 60 re-employed teachers and the number is close to 100 in Calcutta University.
Seven re-employed CU teachers were waiting for renewal of their term, an official said. "Everything has been put on held. We are waiting for the government's next order."
The order has hit teachers of Kalyani, Burdwan, North Bengal and Vidyasagar universities, among others.
The government had asked all universities to submit a list of teachers who have been re-employed since 2011. The deadline was November 30.