In Midwest Stock Exch., Inc. v. NLRB, 635 F.2d 1255 (7th Cir. 1980), the court found that an employer discriminatorily enforced its no-solicitation rule by strictly enforcing the rule against union activities but permitting "[s]uch drives as the Crusade of Mercy, collection of blood in a bloodmobile... [on the employer's] premises, the selling of Avon products, Tupperware, boat cruise tickets, raffle tickets, Girl Scout cookies, and a number of other items."
Finding unlawful interrogation of several employees where questioning was conducted by employer's chief operating officer, officer did not assure employees that there would be no retaliation, responses of employees demonstrated fears about questioning, and questions were accompanied by threats of plant closure