The health of the U.S. job market is Topic A from Wall Street to Main Street to Washington. This week, the Federal Reserve meets to determine if job growth has been strong enough to justify raising a key interest rate. If the men and women of the Fed decide to raise rates, it will have a major impact on the global financial markets, as well as businesses—big and small—all across the United States.

Carl Camden is not a Fed policymaker or an economist, but as the CEO of Kelly Services, one of the world’s leading temporary staffing firms, he knows well how the job market is doing.

He tells Fortune’s Susie Gharib the labor market has been a study in volatility, with weak months followed by blockbuster job gains and then a drop-off the following month. “The U.S. job market is good, but it’s less good than it was,” he explains. “So we’re in a rough spot and we don’t know which way it’s going to go.”

Hiring demand for temporary workers from Kelly’s Fortune 500 customers is “modest” right now, according to Camden. “We are in a very modest growth phase—no rapid growth, no rapid declines,” he says. “So it means the economy is basically moving along at a slow, but steady growth.”

So what should the Fed do at its upcoming meeting? Camden doesn’t say, but cautions that given the U.S.’s wobbly economy, “when you raise the interest rates, that begins to tap on the brakes of economic growth and job creation.”