Yes. If they meet the conditions, they can work up to 20 hours per week in brief.
Details: https://www.immigration.govt.nz/opsmanual/#47535.htm
简单的说,满足一定条件的话,学生可以每周兼职打工20小时,圣诞假期中可以全职打工。
详细规定请见:
中文翻译:http://www.admission.nz/ym/kmslaw/47535
英文网址:https://www.immigration.govt.nz/opsmanual/#47535.htm