Answer:
A dominant culture is one that has established its own norms, values, and preferences as the standard for an entire group of people. Preferences and norms are imposed regardless of whether they contradict what is usual for other members of the group.
Culture — whether ethnic, personal, professional, or organizational — is critical to understanding modern-day workplaces. We have to have conversations about it. Jobs provide much more than a place to receive a paycheck. We spend most of our day engaged in our work. And our work over time builds our careers. As such, workplace culture is highly relevant to how successful our careers — and lives — will be.
Workplace culture can be distinct from prejudice. But it can be hard to distinguish the difference. In the US, the dominant culture could be described as Anglo, Western, affluent, capitalist, success-oriented, and male. These ideals drive what we think of as achievement and being a professional. Standards of appearance, language, and even goals are often explicitly linked to these ideals.