4. A social worker, Mary, sounded off about how much more she was doing for the victims of domestic violence than her coworkers at a nonprofit organization. Mary's criticism of her fellow workers included a weekend text message to coworker Susan indicating that she intended to discuss her concerns regarding employee performance with the agency's executive director. Susan replied first with a text, and later with a message posted on her Facebook page that asked coworkers how they felt about Mary's criticisms of their work, while indicating that she had "about had it!" Five other off-duty coworkers responded objecting to the social worker's assertion that their work was not up to standard. One wrote "What the f* **...Try doing my job I have five programs" while another wrote "What the hell, we don't have a life as it is." Mary responded to Susan, "stop with ur lies about me." She then brought the entire Facebook exchange to the executive director's attention. The five were discharged for "bullying and harassment" of Mary in violation of the employer's "zero tolerance" policy. The executive director explained in each employee's termination interview that Mary had suffered a heart attack as a result of the harassment and that the employer would be obligated to compensate her. Was the executive director's decision to terminate the five co-workers justified under Section 7? Why or why not? 5. Does your answer change if the above-described workplace is non-union? Why or why not