Final answer:
Arnold, the HR manager, is likely to face ethical misconduct issues like falsifying hours, misuse of supplies, and sexual harassment, but not high-level collusion, which falls outside of HR's usual scope.
Step-by-step explanation:
The types of ethical misconduct that Arnold, as an HR manager for a mid-sized engineering consulting firm, is most likely to encounter include employees misrepresenting hours and times worked, employees misusing organizational supplies, and employees sexually harassing co-workers. However, collusion among Arnold's firm and its competitors to rig bids on government contracts is less likely to be encountered on a daily basis by an HR manager, as this type of misconduct involves higher-level strategic decisions that usually go beyond the HR department's oversight.
Employees might start with strong ethical behavior, but there is a risk of rule-breaking over time. It's important to have codes of ethics and a culture of corporate responsibility to guide them. Issues such as affirmative action and the impact of emerging technologies are also relevant points of discussion in the field of business ethics.