If individuals' needs for power, achievement, and affiliation are subconscious, how would a manager know which one motivates which employee? Employees can take a written test to determine their needs. Employees should be asked which need motivates them. It is not necessary to know which need motivates which employee. A manager who knows their staff well can reasonably determine who values which need.If individuals' needs for power, achievement, and affiliation are subconscious, how would a manager know which one motivates which employee? Employees can take a written test to determine their needs. Employees should be asked which need motivates them. It is not necessary to know which need motivates which employee. A manager who knows their staff well can reasonably determine who values which need