KiwiSaver is a government initiative involving employers, KiwiSaver scheme providers and several government agencies. It is open to all New Zealand citizens and people entitled to be in New Zealand indefinitely, aged up to 65.
Each payday your KiwiSaver contributions are deducted from your pay. You can choose to save 4% or 8% of your gross pay. Inland Revenue ensures the safe transfer of your money to your KiwiSaver scheme provider, who invests the money for you in a KiwiSaver scheme. After a year in KiwiSaver you can take a break from saving, called a contributions holiday.
If you're 18 or over, each year the government will pay into your account a member tax credit matching the contributions you've made that year, up to a maximum of $1,042.86. This is the equivalent of up to $20 a week. This will be paid until you're eligible to access your savings - when you're eligible for NZ Super (currently 65) or after five years' membership, whichever is later. To qualify for the member tax credit, your principal place of residence must be in New Zealand (although there are some exceptions).
Just the Government of a small nation making it's own laws to meet the real needs of it's own people.