Since your organization's offices and factories seem to be located in Mumbai and Gujarat, and these are covered under the ID Act, 1947, by virtue of Section 38-B of the Bombay Shops and Establishment Act, the provisions of the Industrial Employment Standing Orders Act and rules framed thereunder are applicable to your offices in Bombay and, as applicable, to Gujarat if it has more than 50 employees. Under Para 23 of the Schedule of Model Standing Order Rules, the retirement age shall be 58 years unless there is a settlement or award. Thus, if your organization enters into a settlement under the ID Act, then the retirement age can be 50 years.
As far as factories are concerned, the Bombay Industrial Relations Act, 1946, is applicable to certain categories of employees. Under Chapter VII, it deals with model standing orders. Para 8 of Schedule I deals with the retirement age. Thus, the settlement arrived at as per the Act, even regarding retirement age, will be applicable. As far as non-workmen or employees under the Bombay Industrial Relations Act category are concerned, the management can frame a company policy of retirement at age 50.
Regards,