Efficiency

Efficiency is a measure of the ability of your colonists to produce goods for the colony.

Basic factors
Productivity depends on two basic factors: Employment levels and happiness of the workers:


 * Employment is simple: The closer to 100% employment you are, the more effective a given structure will be.
 * Happiness is more nuanced: The more annoyed the workers, the lower their productivity. If their morale drops too low, they will instead protest and stop contributing to the output of a given structure.

Advanced modifiers
Of course, the efficiency with which goods are produced at your colony can be further affected by a number of additional features:
 * Social policies in effect, especially Forced overtime.
 * Enhancers
 * Creep attacks.