What is a primary restriction for a COR regarding conflicts of interest?

The primary restriction for a Contracting Officer's Representative (COR) concerning conflicts of interest is working on government matters that affect personal financial interests. This is crucial as the integrity of public service relies on the impartiality of its officials. If a COR were to engage in overseeing contracts or making decisions that could directly impact their personal financial interests, it would create a significant conflict that undermines both the trust in the government process and the ethical standards expected from government employees. Ensuring that a COR remains unbiased and free from personal gain in their professional duties is essential in maintaining transparency and fairness in government contracting.

The other choices typically involve situations that, while relevant to the broader topic of ethics and conduct, do not encapsulate the core issue of personal financial interests jeopardizing the impartiality of a COR’s role. For instance, receiving gifts from contractors and accepting travel reimbursements could indeed present ethical dilemmas, but they do not directly address the specific nature of personal financial conflicts as outlined in the correct choice. Engaging in outside employment during government hours raises questions about time management and commitment, but again, it is separate from the financial interest conflict that is paramount in the COR's responsibilities.