ACC decisions to cut long-term claimants loose from entitlements have been overturned by independent reviews at a higher rate since the corporation adopted a tougher approach to them three years ago, new figures show.
But Prime Minister John Key yesterday backed the corporation's harder stance, saying it should continue and there was no evidence legitimate claimants were missing out.
ACC monitors what it calls its "review uphold rate" - the percentage of formal reviews of ACC decisions that are decided in favour of the corporation - as "an important measure" of the quality of its service.
The rate gives "a key indicator of whether the proportion of ACC's decisions that comply with the legislation has changed".
Its target in recent years has been a 70 per cent success rate at review. Figures provided by the corporation yesterday showed that when it came to long-term claimants on weekly compensation for 2 years or more, it was meeting that target easily in the three years to 2009. In that time the review uphold rate for claimants managed by the specialist Recover Independence Services (RIS) division was between 73 per cent and 77 per cent.