According to the classification system for global organizational culture as developed by Hofstede, the degree to which employees are threatened by ambiguity is known as:

Uncertainty Avoidance

Explanation:

The term uncertainty avoidance was coined by a man named, Geert Hofstede to explain the extent to which people are willing to remain in a given situation so as to avoid uncomfortable circumstances. It reflects the extent to which people are unwilling to take risks. A low uncertainty avoidance index simply means that the people who have just been studied are willing to accommodate ambiguity and take risks. A high uncertainty avoidance on the other hand means that the people are more comfortable in their given positions and are unwilling to take risks.  

So, in the employee situation, the degree to which employees are threatened by ambiguity is known as uncertainty avoidance.

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