the person has been there 4 years, no contract or written statement or handbook.
they left work over a disagreement and didnt give any notice
now work is demanding the holiday overpayment back, to be paid in 7 days, the holidays were authorised by manager and paid thru payroll as normal
also last working weeks pay was not paid to the person in lieu of holiday overpayment
is this legal when there is no contract or anything like that in place?