An attendee holds a "Join Our Team" flyer during the Best Hire Chicago Career Fair on August 7. Jim Vondruska/Bloomberg/Getty Images Washington —

Something in the US economy isn’t adding up, and it’s rattling the people charged with wrangling inflation and keeping the labor market intact.

US companies have sharply slowed their hiring this year , hesitant to invest without knowing the full effects of President Donald Trump’s sweeping economic policies. The economy lost jobs in June and August, and the average pace of job gains for the three months ending in September was only around 62,000, according to the Labor Department.

Yet workers’ productivity, a key driver of economic output, remains high. And gross domestic product, which captures all the goods and services produced in

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