Tell the truth -- the inability to admit fault and learn from mistakes is crippling, professionally.
A focus on rewarding and valuing lower level employees. If they're treated like they're expendable, how can they value the company's vision, values and culture?
Truthful, candid communication. Most people can work well through tough seasons if they believe they're headed in the right direction. Without good leadership that provides that communication and direction, the culture suffers.