Final answer:
Sick time is NOT generally part of corporate investigations, whereas email harassment, falsification of information, and corporate sabotage are typical concerns that might be investigated.
Step-by-step explanation:
The aspect that is NOT generally part of corporate investigation is Option 4: Sick time. Corporate investigations usually involve looking into allegations of misconduct that could harm the company's integrity or finances. This can include examining instances of email harassment, which does not have to be sexual but could be related to any protected class, such as race, national origin, religion, or age. It can also involve investigating the falsification of information, which can impact financial reports or other important documents, as well as corporate sabotage, where an individual or group intentionally damages the company's operations or reputation. In contrast, sick time is typically a human resources matter dealing with employee health and attendance, rather than a corporate investigation concern, unless abuse of sick time is suspected in a broader investigation of employee misconduct.