Just 8.9% of tech workers willingly left their jobs last year, says an Aon Consulting survey of 595 of the world’s best-known tech firms, including Microsoft, Cisco Systems and Intel. The numbers do not include workers who are laid off. In 2003 11.2% of the workforce left jobs involuntarily, compared with 20.3% in 2001, when the tech bubble burst. Only 1.6% of the companies Aon surveyed have a hiring freeze; 29% are hiring normally – a big change from the tight years. Salaries and bonuses are up for every category of employee.