More than half of leaders of privately held businesses (PHBs) globally (56%) feel their stress levels have increased over the last year. The research from the Grant Thornton International Business Report (IBR) 2010 covers the opinions of over 7,400 business owners across 36 economies. Mainland China tops the league for the most stressed leaders (see figure 1) with 76% of business owners saying their stress levels have increased over the last year.