What is the exception to the rule of secondary boycotts?

The exception to the rule of secondary boycotts is associated with the ally doctrine. This doctrine allows unions to engage in secondary boycotts in certain situations where they believe that their primary employer is also dealing with a neutral third party that is taking action harmful to their interests. The ally doctrine is rooted in the idea of solidarity among workers and recognizes that unions may defend their rights by applying pressure to other businesses that are considered allies to their primary employer but are not their primary employer themselves.

Understanding that the ally doctrine provides unions some leeway in using secondary boycotts helps illustrate the complexities involved in labor relations. In contrast, wildcat strikes and hot cargo agreements pertain to different aspects of labor actions and agreements, while charging excessive union dues relates more to financial practices within union operations rather than the strategic application of secondary boycotts.