Sharp drops for big tech companies yanked the U.S. market lower
Employers have added just 28,000 jobs a month since March
Previous head was fired after a disappointing jobs report last year
Several high-profile companies have announced job cuts in the past year
Employers added just 50,000 jobs last month, the U.S. government reported
AI will contribute to 1.6% GDP growth this year, a stronger labour market and mid-2% core inflation