There is no set age to retire and it is illegal to force retirement because of an employee's age.
There are specific requirements regarding age and residency that people must satisfy in order to qualify for New Zealand Superannuation (the State pension). Requirements vary depending on the length of residency and on whether there is a social security agreement between New Zealand and your home country (and the terms of any such agreement).
Pension transfers can be complex and it is advisable to seek expert advice well before arriving in New Zealand. The Ministry of Social Development can provide detailed guidance on which provisions may apply.
For further information visit the Ministry of Social Development's website New Zealand Superannuation or overseas pensions pages.
If problems do arise in an employment relationship, employees and employers can get information and guidance from the Workplace Contact Centre, freephone: 0800 20 90 20 or visit the Department of Labour.