A BNZ spokesperson said the bank couldn't identify any concerns
"I wonder if this will affect everyone helping those suffering?"
Dozens of other stores will move to three days a week.
But is the saving worth it in the short term?
The bank will operate under ICBC and ICBC (New Zealand) Limited.
It says 12 months' notice will allow employees time to consider their options.
Sir John Key has described Watson as "the outstanding applicant for the role".