Twenty-nine percent of workers said they have used artificial intelligence (AI) at work, and 72 percent of those who have used it said that it has made them more productive, the latest CNBC|SurveyMonkey Workforce Survey reported. The remainder, 28 percent, said that AI has made them less productive.

Perhaps unsurprisingly, younger workers are more likely to have used AI in their jobs than older workers. Thirty-seven percent of Gen Z-ers and 35 percent of millennials are most likely to have used AI, as opposed to 25 percent of Gen X-ers and 17 percent of baby boomers.

Despite the increased use of the tool, 42 percent of the respondents were concerned about AI’s impact on their jobs, with workers of color, individual contributors, and lower-salaried workers most concerned, according to the survey. Fifty-three percent of Asian and Black workers, and 46 percent of Hispanic workers said they are "very or somewhat concerned," compared with 37 percent of white workers.

Despite those concerns, AI is especially popular among workers of color: 41 percent of Asian, 38 percent of Black, and 36 percent of Hispanic workers have used AI software at work, compared to 23 percent of white workers.

Overall, workers who use AI at work are nearly twice as likely to be concerned about its impact on their job, compared with those who do not use AI at work (60 percent very or somewhat concerned versus 35 percent).

The online poll was conducted Dec. 4-8 by SurveyMonkey among a national sample of 7,776 workers in the United States.

Meanwhile, the debate over AI’s potential to redefine or eliminate jobs continues.

AI is more likely to “disassemble” jobs than eliminate them, social scientist and Harvard University professor Arthur C. Brooks, who studies happiness, said at CNBC’s recent Work Summit.

“There are numerous discrete tasks for any job that a person does,” he said. “AI is going to unbundle those tasks and reassemble them” in a way that looks different from the way the job is done today.

“Jobs will change, but they’re not all going away,” he said.

Former Goldman Sachs CFO and CIO Marty Chavez said that workers have three choices in the AI era: to become a computer scientist, to collaborate with the computer scientists to make their jobs more interesting and productive through technology, or to stand in the way of progress.

“Do not set yourself up in competition with the computers,” he said at the CNBC Work Summit. “I decided in seventh grade to not compete with calculators on multiplying numbers. I had confidence finding what tools can do better will open up new things for me to do.”

Brooks advised company leaders to reframe change as progress, not just disruption. “Talking to employees about doing their job with different skills is a lot less scary” than having them believe that AI is about to steal their livelihood, he said.