“share any tools, knowledge or support”
Playing Devil’s advocate, how is that sabotage?
Withholding knowledge, tools and support could endanger the worker as well as the product, creating unsafe work conditions or creating an accident, which will shut down the production line.
If that is the intention, that is sabotage to the employer.
Simple. Because that directly and negatively impacts the function of the company, economically and productively. It also falls under economic terrorism because they are taking a political action as their basis.
The intent, ultimately, is to circumvent the law and force the company to hire only union and return to forcing union employees to pay up...at threat of lowering produvtivity of said employees and thuscorporate income.
Put yourself in the role of employer and imagine how you would want your employees to act. Where I work, someone who engaged in the behavior described would not last very long.
They work for the company, not the union. Their job is to assist their fellow employees in order to do the job. Period.