From 1 April, there are 2 important changes with wage payments.
Firstly the minimum wage increases to $14.25 per hour.
Secondly, the ACC component of PAYE deductions reduces. So if you have employee wages on automatic payments these will need to be changed for any pays after 1 April.
If you use an on-line payroll provider, these changes will be automatically updated. If you use a desktop payroll system (like MYOB), you will need to ensure that an update has been applied before doing your first pay after 1 April.