The ACC Minister says the accidental injury cover scheme's been allowed to drift over the years, but should be retained. 

The latest injuries report shows ACC spent $4.4 billion on treatment last year, and $3.1 billion on weekly compensation. 

Scott Simpson says running the scheme costs about $8.3 billion dollars annually.

"It's been working well for New Zealanders for nigh-on 50 years, my role as minister is to make sure it works for the next 50 years."

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