Dear Ms. Sweta1,
Some one is scheduled tomorrow to meet you at your office, lets say from a Income Tax department and a mail flows swiftly declaring a Holiday tomorrow on some occassion... What would you do? [The company you are working matters]
Critical areas pertaining to process & rules have been decided & declared earlier to avoid any sort of discripencies at work place. It's not just the Government offices, this goes even with the Private & other sectors too. Being a HR it should be of dire responsibility to seek challenges before hand. If the management forces to declare any holiday pertaining to workforce-- an Inter Office Communication (IOC) with acknowledgement is the bestest option above all. People scheduled to their daily routine will have no barriers. They don't knock over you.
A recent incident ensued past week 9th April '13, a holiday declared on account of AP Bandh for Government raising heavy charges on Electricity, which was declared a week before the Bandh took place. There are also many incidents that throw us light on abrupt holidays, in such cases you have nothing but to say HOLIDAY DECLARED BY THE MANAGEMENT!
P.S: IOC can be sent to the HOD's, Senior personnels for their team initials. An email can then be circulated 24 hours prior to the unintended holiday.