Valence refers to the emotional orientations of people regarding the outcomes or rewards, or the level of satisfaction people expect to get from the outcome, as opposed to the actual satisfaction they get after attaining the reward. The primary motivator to undertake a task is not any reward, but the reward that the person holds high or wants.
An outcome shows positive valence if the employee prefers having the specified reward to not having it. Two such positive rewards are extrinsic rewards such as pay, recognition, and the like, and intrinsic rewards such as satisfaction, time off and the like. Such rewards motivate employees the most.
The outcome shows negative valence if the employee prefers to avoid such outcomes. Such outcomes act as a deterrent rather than a motivator. Examples of such outcomes include fatigue, stress, lay-offs and the like.
Outcomes to which the employees remain indifferent are zero valence and fail to motivate the employee.