Ihaka here, my thoughts are if you’ve gone through a consultation process with people to reduce their wages to 80% then I would assume they would still be expected to work their normal contracted hours.
I would need more information though:
Have they reduced staff wages to 80% for the duration of the lockdown only?
What sort of agreement have they come to? I would assume the hours worked would be part of the negotiation/consultation process?
Is there 40 hours’ worth of work available for everyone?
Sorry to answer your questions with questions but a bit of context will help narrow the response!