Once you have joined the MRS you are required to keep contributing as long as you are working in the maritime industry.
After you have contributed to MKS for twelve months you can apply to the IRD for a saving suspension. The saving suspension can be for as little as three months or as long as one year. They can also be rolled over. If you are also a member of MRS, taking a saving suspension may affect your entitlements under that scheme, particularly your entitlement to a death benefit.