U.S. job openings unexpectedly increased in May, but a decline in hiring added to signs that the labor market had shifted into lower gear amid uncertainty over the Trump administration's tariffs on imports,

However, the report showed that hiring fell in May, suggesting that employers, though reluctant to lose staff, are hesitant about adding workers amid uncertainty over the economy.

Employers created 147,000 jobs in June, close to the healthy pace of job creation in May, despite economic uncertainty that has weighed on the economy. The unemployment rate ticked down to 4.1 percent,