Caribou Coffee is closing its store at 5899 Northwest Hwy,, Crystal Lake.
The coffeeshop will close at noon Sunday.
"We were given nine days notice," said a shift manager at the store. "It's a hard hit for everyone here. It's very sad. We're going to miss our customers."
She said employees were told the Minnesota-based company was closing "underperforming" stores. She said about 80 stores would be closed around the U.S.
The Crystal Lake location has been open for 10 years, and has about 10 employees.
Also closing Sunday are Caribou Coffee locations at 2168 Randall Road in Carpentersville and 105 Main St. in Barrington.
Caribou has 66 locations in Illinois. Company officials could not be reached for comment Monday.
Caribou was purchased in December for $340 million by the Joh. A. Benckiser Group, a German investment firm. Last fall, the firm paid nearly $1 billion for Peet's Coffee and Tea.