To illustrate the tradeoff between work and leisure Kostoris calculated that if every Italian gave up one week of time off the GNP would increase by 0.3% to 0.4%. The idea was initially endorsed by Italian prime minister Silvio Berlusconi; in a speech in Cernobbio on 29 March he said "There are too many holidays. A few days of extra work will produce a beneficial effect on GNP". But the public reaction was quite negative and the idea was quietly dropped. While Kostoris was pilloried as a slave driver who wants to force people to work, the substantive issues raised in her article were not seriously addressed.