In a landmark 1985 Supreme Court case, , the court delved deep into the seniority rules. One of the main issues was whether promotions based on 'non-selection' (i.e., seniority-cum-suitability) were valid. The Supreme Court upheld this principle, affirming that it was not equivalent to 'selection' and was a legitimate method for career advancement within the service.
The is an official, gazetted document published periodically by the Railway Board (Ministry of Railways, Government of India). It ranks all regular IRHS officers based on their relative standing in service. irhs railway seniority list