Christchurch Hato Hone St John ambulance workers are kicking off a day of nationwide rallies following pay negotiation breakdowns. 

More than two and a half thousand officers are taking part in staggered four-hour withdrawals of labour until 4am tomorrow. 

Christchurch staff will march from 8am. 

Ambulance Association Division Chairman Mark Quin told Ryan Bridge that St John will be operating at 70% capacity today. 

He says some areas aren't even noticing the staff withdrawals as they become accustomed to operating with so few staff. 

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• St John to operate at 70% capacity during ambulance strike