In June 2010, Kosor proposed loosening the labor law and making it more business friendly, in order to foster economic growth. The proposed new labour law would have set a six-month deadline for hammering out a new collective agreement after the existing one expires. After that, the workers' rights would be subject to separate agreements with individual employers instead. The changing of the labour law was greatly opposed by five trade unions: a petition demanding a referendum gathered 813,016 signatures, far more than the required 449,506 signatures (10 percent of all voters in Croatia), in the first successful popular referendum attempt.