How would you deal with employee handbook policies that have contradictory values?
If the handbook is in adequate then there are several other ways to deal with contradictions such as:
Consider past practice.
Consider the Costs i.e. financial, social, ethical, etc., of doing things in different ways.
Consider joint recollection of what the parties intended to mean when the handbook was written.
Consider letters of understanding you explaining the handbook policies.
Consider what is done by other arbitrators, companies, or court cases in that, or similar, situations.
Consult with management and human resource management concerning potential contradictory policies.