Employment Relations Act 2000, Part 6AA
All employees have the right to ask their employer for permanent or long-term changes to their working arrangements. This can be about when they do their work (which days or hours) or where they do their work (for example, working from home), or both.
Your employer has to follow a set process when they respond to your request, including replying in writing within a set time. If they don’t follow this process, you can get help from a government labour inspector and, if necessary, go to the Employment Relations Authority.
The law also says your employer can refuse your request only if they can’t “accommodate” the changes you’re asking for – in other words, that they can’t make the changes fit with the business’s operations. However, you can’t legally challenge their decision if you disagree with them about this.