Common use of Mental Effort Clause in Contracts

Mental Effort. This sub-factor measures the duration and intensity of mental and sensory demands causing fatigue that are required to perform the job (i.e., the expenditure of mental energy). • Mental demands are those activities that use concentration and cause fatigue (e.g., thinking, active and passive listening, interpreting, observing). • Sensory demands are those activities that use one or more of the five senses (sight, taste, smell, touch and hearing) in the course of the job requirements. Intensity of mental effort is measured as routine, moderate or high. Half-levels are not used in this subfactor. Typical examples of tasks are found below. Level Physical Effort Descriptors 1 Mostly low level of mental effort with occasional moderate intensity lasting up to less than 2 hours per day. 2 Moderate level of mental effort for 2 to 3.5 hours per day with the rest of the day characterized as low intensity. 3 Moderate level of mental effort for more than 3.5 hours per day and/or a high level of mental effort for 2 hours or less per day. 4 High level of mental effort required for more than 2 and less than 3.5 hours per day and the balance of the day is a moderate level of intensity. 5 More than 3.5 hours per day is characterized as operating at a high level of intensity.