Conn. Gen. Stat. § 53-303b: Employment of labor and retail sales on certain holidays.

(a) The provisions of section 53-302a shall apply to Thanksgiving Day, Christmas, New Year's Day, Memorial and Independence Day, or if any of said days is on Sunday, to the Monday following, and to Labor Day.

(b) The provisions of section 53-302a shall not apply to the sale or furnishing of personal property or services at retail by any retail stores not exempted under said section 53-302a, on those Sundays following the fourth Thursday in November and preceding December twenty-fifth.