Company Name Change or Change of Employment - What kind of Documents does one provide to Employees?

What kind of Documents does one provide to Employees when you change the name of the Company. One of our employees is getting a home loan from a bank and they are asking for some kind of Change of Employment Document. Can anyone help with this or send any sample or template for such a document, please?
As per the bank, it can also be a sort of document that is like another offer letter in the replacement of the old offer letter

Issue a formal order on the letterhead of the new company indicating that the old company is being rechristened in the new name and assuring continuity of service. Add the reference of the order of the Registrar of Companies. The Order should also specifically mention that the new company has taken the liabilities of the old company.