Deputy Mary Le Hegarat was one of four Members who refused to back the document, which sets out the government’s income and spending plans for the next four years.
She and Senator Kristina Moore voted against the plan, while Deputies Steve Luce and Kirsten Morel abstained.
An amendment lodged by the Government Plan Review Panel calling for the debate on proposals to make efficiencies of £40 million next year was rejected by the States.
Efficiencies of £100 million over the four-year life of the Government Plan have been proposed.
Deputy Le Hegarat said: ‘I made the decision because I didn’t feel that we were given sufficient detail about how the efficiencies were going to be made.
‘They were saying that there were going to be £40 million of efficiencies next year and £100 million over the whole plan.
‘I wasn’t confident that the information we were given actually evidenced that these could be made and I didn’t feel comfortable voting for something when we didn’t know whether it would be achievable.
‘The Scrutiny panel asked for more time to review the efficiencies plan but they didn’t give it to us.
‘I am concerned that if we don’t make these efficiencies, are they going to turn to cutting staff to make savings?’
The Efficiencies Plan has received considerable criticism from backbenchers, who have claimed that many of its proposals, such as managing inflation to save nearly £5 million, could be unachievable or are not true efficiencies.
The plan has already suffered a setback after Members backed Deputy Russell Labey’s amendment to block the extension of chargeable hours in car parks to between 8am and 6pm.
The measure would have raised £700,000 in revenue, which the government had outlined as part of its efficiencies target.
