The work rota's enchantment? (5,2,4)

'the' is the definition.
I know nothing about this answer so I can't tell whether this works.

'work rota's enchantment?' is the wordplay.
I cannot quite see how this works, but
'work' could be 'duty' (duty is a kind of work) and 'duty' is present in the answer.
'enchantment?' could be 'spell' ('spell' can be a synonym of 'enchantment') and 'spell' is found in the answer.
The remaining letters 'of' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?