CHICAGO (CBS) — A new survey lists the professions of people who say they need coffee the most to get them going in the morning.

As WBBM Newsradio’s Bernie Tafoya reports, foodservice and food preparation workers are tops on the list of workers who say they have to have their coffee to give them a jolt to start the day. Believe it or not, they’re followed by scientists, then people in sales, marketing and public relations, and then nurses.

LISTEN: WBBM Newsradio’s Bernie Tafoya reports

Journalists, business executives and teachers are next, followed by engineers and information technology managers.

The survey from CareerBuilder and Dunkin’ Donuts finds that 43 percent of workers who say they drink coffee say they’re less productive without it.

Younger workers seem to be more dependent on their morning joe – 62 percent of workers ages 18 to 25 say they are less productive without coffee, as do 58 percent of those 25 to 34.

East Coast residents are most partial to their coffee. A total of 64 percent of residents of the Northeast drink a cup per day, followed by 54 percent in the South, and 51 percent in the Midwest and West. A release on the study did not specify how Chicago stacks up to the rest of the Midwest in her coffee habits.

The survey also finds 45 percent of workers don’t drink coffee at all. A total of 63 percent drink two cups or more each workday, and 28 percent drink three cups or more.