Specifically because it's a union-busting tactic, employers cannot give benefits to non-union employees that are not at least offered to union employees. Remem

Specifically because it's a union-busting tactic, employers cannot give benefits to non-union employees that are not at least offered to union employees. Remember, the employer/employee relationship is an inherently unequal one. The freedom of the employer to do certain things is curtailed for the common good, in exchange for substantial power and economic advantages.