Ryanair chief Michael O'Leary has urged the Irish government to cut $20 billion not $4 billion in public service payments in next month's budget.
The always controversial airline chief told Ireland's Sunday Independent that he had no confidence in the Irish Government.
"I think they are utterly useless," he said.
"All they've done since the McCarthy report was published six months ago is talk about taking tough decisions in December. It's like breathing. You don't need to talk about tough decisions. Take tough decisions. You're a government, for Christ's sake, you're elected to lead. And what did they do? They fecked off on three months' holidays while this country borrows €500m a week."
O'Leary said: "I've been asked if I were Minister for Finance, what I would do to reduce costs by €4bn. I wouldn't reduce them by €4bn. I'd reduce them by €20bn in one year. I would eliminate 20 per cent of the civil service by simple means of requiring them all to work a minimum of 40 hours a week from Monday to Friday, and take 20 days' holidays a year like everybody else in the bloody real world. And if you don't like it, leave."
The Ryanair boss added: "What mystifies me is the Government falls all over itself trying to attract the world's biggest companies to invest in this country. You have the world's biggest airline resident in this country, willing to invest in this country in an industry which, despite the recession, you can turn on growth straightaway: tourism, hotels, bars, restaurants, the works.
"We've been doing business here since 1986 and yet the Government has followed only two policies. One: pissing us off; and two: promoting and protecting what is clearly an incompetent monopoly at Dublin Airport."
Another millionaire businessman Fran Rooney, founder of Baltimore Technologies says drastic new thinking was needed including paying business to hire unemployed workers .
"We have a lot of people unemployed, and we're paying for those people to be unemployed, essentially. One very simple stimulus would be to pay companies to take them on board. We'd get two things out of that. We would take people off the live register and we'd also be putting them back into employment which will help to stimulate the economy," he said.