Extra ordinary leave is granted when generally no other kind of leave is admissible.
When other leave is admissible but the rly servant applies in writing for the grant of EOL.
Leave sanctioning authority may sanction EOL, but all kind of leave including EOL may not exceed 5 years in a spell.
For more than five years continuous period of leave or absent, only President is empowered to grant the EOL.
24 months EOL is granted for the purpose of prosecuting studies in the public interest, provided the rly servant has completed three years of continuous service on the date of expiry of leave of a kind due and admissible to him including three months of EOL.