Hello Gurmeet,
I am with (Cite Contribution)'s views.
To add further, going by your query, it does seem that you are a senior HR professional yourself--else such a query wouldn't be put to you [lower level HR professionals' focus is quite something else].
Having said this, I do hope you did some amount of research about the company thru Internet BEFORE going for the interview--which would give you the general nature/domain of the company. Each domain/industry has it's own set of situations/cultures to be handled--which (Cite Contribution) mentioned.
One rather-common aspect of senior employees [by which I mean those who have been with the company since a long time, rather than those who have vast experience but joined fairly recently] is that the mentality of indispensability slowly seeps into them as they keep adding their years within the company--though exceptions are always there. The irony/funny part of this situation is that many of them DON'T realize that this has happened--even though it may be quite apparent to others--which becomes a daunting task for those handling such individuals [telling this on the face of a senior professional without hurting COULD be tough].
You would need to figure-out how to handle such people--keeping in-mind that a single solution may not work for everyone.
Pl give more details about the situation so that more focused suggestions can come forth from the members @ CiteHR.
Rgds,
TS