IREC Rule No.509: Employment During Leave
509. Employment During Leave:-
A Railway servant on leave may not take any service or accept any employment without obtaining the previous sanction of;
(a) The President if the proposed service or employment is outside India; and
(b) The authority empowered to appoint him, if in India.
Note: This does not apply to casual literacy work or to service as an examiner or similar employment nor does it apply to acceptance of foreign service with the sanction of the competent authority.