If you have lived or worked in New Zealand for any length of time, you have likely heard the term "Mondayisation". But what does it actually mean, which public holidays does it apply to, and what happens when two statutory holidays fall on the exact same weekend? Here is everything you need to know under New Zealand employment law.
What is Mondayisation?
Under the Holidays Act 2003 (and subsequent amendments like the Holidays (Full Recognition of Waitangi Day and ANZAC Day) Amendment Act 2013), Mondayisation happens when a statutory public holiday that falls on a calendar Saturday or Sunday is transferred to the following Monday (or in some cases, Tuesday) for employees who do not ordinarily work on weekends.
The intention behind Mondayisation is simple: employees should not miss out on their paid statutory day off just because a public holiday happens to land on a weekend.
Which Holidays Can Be Mondayised?
Only statutory holidays that fall on a specific calendar date (rather than a designated Monday or Friday) can be Mondayised. In New Zealand, these are:
- ✓Christmas Day (25 December)
- ✓Boxing Day (26 December)
- ✓New Year's Day (1 January)
- ✓Day After New Year's Day (2 January)
- ✓Waitangi Day (6 February)
- ✓ANZAC Day (25 April)
Holidays like Good Friday, Easter Monday, King's Birthday, Matariki, Labour Day, and Provincial Anniversary Days are always fixed to a Monday or Friday by law and therefore do not require Mondayisation.
How "Tuesdayisation" Works
When both Christmas Day and Boxing Day (or New Year's Day and 2 January) fall on a weekend, a phenomenon known as Tuesdayisation occurs:
Example (Saturday Christmas):
- 25 December (Christmas Day) falls on Saturday → Transferred to Monday, 27 December.
- 26 December (Boxing Day) falls on Sunday → Transferred to Tuesday, 28 December.
This grants standard Monday–Friday workers a guaranteed 4-day weekend (Saturday through Tuesday) without deducting a single day from their annual leave balance!
What If You Normally Work on Weekends?
Under Section 45 of the Holidays Act 2003, Mondayisation only applies if the calendar day the holiday falls on is not an otherwise working day for the employee.
- If Saturday is a normal working day for you: You observe the public holiday on Saturday. You receive public holiday entitlements (time-and-a-half plus an alternative holiday / day in lieu if you work it). You do not get the following Monday off.
- If Saturday is NOT a normal working day for you: The public holiday is Mondayised to Monday. Monday becomes your public holiday.
- No "double-dipping": An employee can never receive statutory holiday entitlements for both the calendar weekend day and the Mondayised weekday for the same holiday.
How LeaveHacker Automatically Handles This
Our leave recommendation engine automatically computes Mondayisation and Tuesdayisation for every future year (2026, 2027, 2028). You never have to manually calculate whether Waitangi Day or Christmas transfers—we show you the exact bridge days and consecutive break calculations instantly.
Explore Holiday Bridges in the Planner→