If we’re talking about social consent (e.g. drinking, sex), absolutely “no” is a complete sentence. Or perhaps if you’re being asked at work to do something ill

If we’re talking about social consent (e.g. drinking, sex), absolutely “no” is a complete sentence. Or perhaps if you’re being asked at work to do something illegal. But working with others at your employer’s direction requires discussion, explanation, negotiation. “No” alone is a good way to let the employer know you don’t want to work there anymore.