Posties across New Zealand warn a new proposal could see fewer home deliveries and more theft.

The National President of the Postal Workers Union says NZ Post has set up postal hubs in rural areas and may be expanding these hubs into urban areas.

Postal Workers Union co-national president John Maynard says the existing postal hubs are getting broken into and people aren't getting personal deliveries sent to their homes.

"We're concerned that that may spread into other rural subdivisions, eventually into the cities and towns."

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