In evidence to the Pay Review Body that decides NHS pay, the union said the existing deal was insufficient.
Unite split with the Royal College of Nursing (RCN) and other health unions to oppose the pay deal for 2008/9 - worth 8% over three years - from the outset.
The Unite evidence is also calling for fresh negotiations on cutting the working week from 37.5 to 35 hours per week.
Yesterday NHS Employers said the three-year pay deal should not be revised, despite inflation soaring to 5%.
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