Workload model

The term workload has many different meanings. This is why it is not always obvious what is meant by workload. Nevertheless, it is possible to objectify workload.

Intergo developed a model for mental workload, based on literature, (inter) national norms and experiences in previous workload projects. The workload model is mainly based on ISO 10075 (1991).

Aside from the task itself, the work surroundings as well as the experienced workload are part of the workload model. These three areas together are connected to each other and result in a certain quality of task output. The figure and table illustrate this model.

The input for carrying out a task is:

  • Task demands: this includes the tasks and actions an employee performs during his work.
  • Work environment: this includes the physical as well as the mental work environment.

The task demands and the work surroundings make that every individual experiences a different amount of workload, the experienced workload. Factors as knowledge, experience and personal circumstances play an important role for the individual experienced workload.

These three dimensions together determine the mental workload, which is directly linked to task performance.

Intergo has tools to measure all three aspects of workload.