Anchor: It's not often that the rank and file get together to talk about their problems.
Entailed: Talking about their problems is not often done between the rank and file. 
Contradiction: The rank and file always get together to talk about their problems. 
Contradiction: The dog is sleeping.
Contradiction: The model implies that mail processing and delivery costs will comprise specific percentages of total costs at specific volume levels, however it doesn't state this as fact.
Contradiction: They are not capable of doing any further research.
Contradiction: Employees get a good idea of their daily activities and how they help the organization's goals.