Employers haven’t had to think about Mondayisation recently… but it's back in 2026/27, so make sure you're ready!
2024 and 2025 were relatively quiet, with most public holidays landing on weekdays, so payroll ran as expected.
In light of this, Mondayisation slipped off the radar.
But 2026 and 2027 change that.
We’re heading into a cycle where:
• Multiple public holidays fall on weekends
• Mondayisation and Tuesdayisation kick in again
• Different employees can have different public holiday entitlements
Same business. Same day. Different outcomes.
And that’s where things get tricky, because Mondayisation isn’t a “set and forget” rule.
How you manage it depends on whether the day is an otherwise working day for each employee.
Get that wrong, and you’re dealing with:
• Incorrect pays.
• Missed Alternative days.
• Payroll rework.
• Compliance exposure.
The tricky part? Some businesses won’t realise there’s a problem until after payroll is processed.
When a public holiday falls on a Saturday or Sunday, for the benefit of those who do not normally work on the weekend, it is moved to the following Monday (or in some cases Tuesday). This is called ‘Mondayisation’.
Rather than reinvent the wheel and create a guide, here is a link to the Employment NZ website page on how to handle Mondayisation.
