By Lydia DePillis, CNN Business

Americans got another positive jobs report on Friday -- but it was full of warning signs that the economy is beginning to stutter.

The US economy added 155,000 jobs in November, the Labor Department reported Friday. That's fewer than expected, but the unemployment rate remained steady at 3.7%.

October's jobs numbers were also revised down slightly, to put the monthly average over the past year at about 204,000 jobs, and the average over the last quarter at 170,000.

The report is a sign of a slowing but still strong labor market — and further support for the idea that the Federal Reserve may hold off hiking interest rates over the next year as quickly or as much as initially planned.

That's reassuring to investors who had been worried that the Fed would move too fast to cool off an already decelerating economy.

"My reaction is a sigh of relief," said Leo Grohowski, chief Investment Officer at BNY Mellon Wealth Management. "I think a mild miss is more than acceptable in order to help the Fed understand that multiple rate increases may not be warranted for 2019."

Markets have been in turmoil in recent weeks amid continued uncertainty about Trump's ability to end his trade war with China, as well as over his ability to sell Congress on his replacement for the North American Free Trade Agreement. The President last weekend threatened to terminate the 1994 deal, which would create a six-month window for Congress to ratify the new deal, known as the US-Mexico-Canada Agreement, or risk having no deal at all.

Most economists have been projecting a slowdown in 2019 as the effects of tax cuts and government spending wear off, turning into a recession sometime in 2020. The current expansion is only seven months away from being the longest period of positive job growth since the 1850s.

The missing ingredient, however, has been wage growth — and that looks like it's beginning to change. Paychecks grew by 3.1% over the last year, a relatively robust number that is in line with expectations as employers have had to fight to attract workers in recent months.

The percentage of people participating in the labor force remained the same and the median number of weeks people remained unemployed dropped from 9.4 to 8.9 weeks in November, suggesting that people are getting jobs more quickly after losing them.

However, the number of people "marginally attached" to the labor force — those who had looked for a job in the past year but stopped in the past month because they couldn't find one — has risen by nearly 200,000 over the past year. The percentage of people working part time who would rather work full time also rose slightly.

Despite high demand for workers in some sectors, that may show that people who want jobs increasingly aren't in the places where employers need them — and that the economy still has room to expand before running out of workers entirely. Also, the number of people holding part-time jobs in addition to their full-time jobs has been rising, and is now above its pre-recession high.

The retail sector, which is readying for a very busy holiday season, saw surprisingly anemic employment growth. New jobs in general merchandise stores were offset by losses in clothing, electronics, and sporting goods stores.

The strongest job growth came in health care, transportation and warehousing, and manufacturing, which added another 27,000 jobs for 288,000 total growth over the past year. Tariffs and fears of a larger trade war may not be having a huge positive impact, but they're definitely not choking the sector either.

"I think the narrative has turned quite negative on the economy, part of that driven by trade and tariffs," Grohowski said. "And we're not hearing that from the CEOs and CFOs we're talking to."