According to Code 80 of the Occupational Safety, Health and Working Conditions Code, 2020, how many days in advance must an employer apply for permission to close down an industrial establishment? 

As per Code 80. (1) An employer who intends to close down an undertaking of an industrial establishment to which this Chapter applies shall, electronically or otherwise, apply in such manner as may be prescribed, for prior permission at least ninety days before the date on which the intended closure is to become effective, to the appropriate Government, stating clearly the reasons for the intended closure of the undertaking and a copy of such application shall also be served simultaneously on the representatives of the workers in such manner as may be prescribed: Provided that nothing in this sub-section shall apply to an undertaking set up for the construction of buildings, bridges, roads, canals, dams or for other construction work.