In the Western tech industry, you most frequently encounter the term EOL for software that’s reached its end of life. It is occasionally used for the same in health care for the dying.
But on the Indian subcontinent, it apparently refers to one of a great many forms of leave to which various public employees are entitled. From this document from the National Institute of Technology at Tiruchirappalli we learn of just a few of these many, many leaves:
- Casual Leave. (CL)
- Special Casual Leave.(SCL)
- Special Leave
- Earned Leave (EL)
- Vacation (Only for academic staff)
- Half Pay Leave (HPL)
- Commuted Leave
- Leave Not Due (LND)
- Extra-ordinary Leave (EOL)
- Maternity Leave
- Adoption Leave
- Paternity Leave
- Hospital Leave
- Sabbatical Leave
- Study Leave
(Isn't that remarkable?)
So probably this is a professor currently on extraördinary leave, for whatever reason. The linked-to document explains what this is at great length, the beginning of which runs:
Extraordinary Leave shall always be without leave salary and may be granted when no other kind of leave is admissible, or when other leave being admissible, the staff concerned has specifically applied in writing for the grant of EOL.