A prominent Mexican restaurant in Napa’s acclaimed Oxbow Public Market has been fined more than $45,000 for violating child labor laws, following an investigation by the U.S. Department of Labor.

An upscale Mexican eatery at Napa's Oxbow Public Market said it has closed, about a week after an announcement by the U.S. Department of Labor that C Casa had allowed minors as young as 14 “to ...