Determine whether the behavior in the scenario could be described as unethical or illegal and how this should be addressed professionally.

The behavior in the scenario could definitely be described as unethical. It is important to note that while this behavior might not meet the criteria of being illegal, it still has a negative impact on workplace morale and productivity.

This situation should be addressed professionally by first discussing the issue with the individual responsible for the behavior. It is important to give them an opportunity to explain their actions, and provide feedback about how their behaviors are impacting those around them. If necessary, establish clear expectations for expected conduct going forward and ensure that those expectations are communicated clearly to all involved parties.

It may also be beneficial to document any changes in behavior, making sure to include dates, times, witnesses etc., so that there is a record if further action needs to be taken down the road. Additionally, depending on company policy or applicable laws/regulations it may also be necessary for a more formal disciplinary process such as suspension or termination of employment if corrective action does not seem effective

In any case, it is essential that those in charge of addressing this type of situation remain professional throughout – even when dealing with difficult situations or people who do not respond positively right away. Doing so will help maintain respect among all parties involved and ultimately lead towards long-term solutions rather than short term fixes.