Chastise worker to get control (8)

I believe the answer is:

whiphand

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'chastise' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'worker to get control' is the wordplay.
'worker' becomes 'hand' (hand is a kind of worker).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'get control' becomes 'whip' (I can't justify this - if you can you should believe this answer much more).
'hand' after 'whip' is 'WHIPHAND'.

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I've seen this clue in The Irish News.

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