(1) Save as provided in clause (3) no Corporation employee shall except with the previous sanction of the Corporation give evidence in connection with any enquiry conducted by any person, committee or authority.
(2) Where any sanction has been accorded under clause (1), no employee giving such evidence shall criticise the policy or any action of the Central or a State Government or the Corporation.
(3) Nothing in this regulation shall apply to – a) evidence given at an enquiry before an authority appointed by the Government, by Parliament or by a State Legislature ;
b) evidence given in any judicial enquiry ; or c) evidence given at any departmental enquiry ordered by the Corporation or by authorities subordinate to the Corporation.