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Is it fair for a General Manager to impose unilateral social norms in a multicultural workplace? - can i get a unilateral orchiectomy

The Amercan society in which people of all cultures and backgrounds, which is in a corporate structure that is fair, the head of the site, to make unilateral decisions on what is appropriate and what is inappropriate without a chance for the subjects the opportunity to discuss the details?

Of course, it is assumed that he / she will act in the best interest of his team and now she / he is working.
It should not non-US holder of the Green Card gives you the opportunity to discuss and refute the details before he fired from his job?