Retrenchment and closure notice requirements under the Industrial Relations Code demand advance intimation, worker dues, and compliance declarations. Retrenchment and closure under Chapter IX of the Industrial Relations Code, 2020 require a prescribed notice to the Central Government in Form XIII, submitted online or, in exigent cases, on paper. The notice must state the establishment details, whether retrenchment or closure is proposed, the effective date, the number of affected workers, and the reason for the action. It must also record one month's notice or pay in lieu, payment of dues and compensation, compliance with retrenchment requirements, pending court cases if any, and a verification of accuracy.