In Bourne, we held that interrogation which does not contain express threats is not an unfair labor practice unless certain "fairly severe standards" are met showing that the very fact of interrogation was coercive.
In J.C. Penney and Guardian Industries, we found that an employer's policy permitting employees to post personal announcements and for-sale notices did not compel them to allow union postings, as long as the policy was consistently enforced.
Noting that, "in analyzing [the Board's] application of law to particular facts," this court defers to the Board's inferences and the legal conclusions that it draws from those facts
Finding isolated statements made by low-echelon foremen and supervisors who were friends of the employees non-coercive where statements were made in friendly conversations
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."