No lease of commercial space in a shopping center or in a building occupied by two or more businesses entered into on or after October 1, 1979, shall require a lessee to be open for business seven days a week or on any specified day of the week. Any provision in a lease which violates this section shall be void.
Conn. Gen. Stat. § 47a-4b
(P.A. 79-415, S. 1.)