Does Your Job Demands Analysis Include Cognitive Demands?

For decades, occupational rehabilitation professionals have focused on understanding and measuring the physical demands of work. We assess lifting, carrying, pushing, pulling, repetitive movements, postures, and physical endurance. We've developed sophisticated testing methods and standardized approaches to help us understand what a job requires and whether an individual has the physical capacity to perform it. But as our understanding of health and functional performance continues to evolve, I think we need to ask ourselves an important question. Are we doing enough to understand the cognitive demands of work?

We are seeing greater awareness of mental health conditions, concussions, traumatic brain injuries, and the many other factors that can influence how someone functions throughout the day. We also have a better appreciation for how pain, fatigue, anxiety, and fear of reinjury can influence functional performance. Yet much of occupational rehabilitation continues to center on physical abilities, even when we recognize that physical limitations may be only part of the problem.

Those of us who have performed Functional Capacity Evaluations (FCEs) have probably encountered patients whose physical test results didn't quite tell the whole story. Their strength might have been adequate, they could perform the required lifting and carrying activities, and their physical endurance appeared reasonable. But something still didn't seem right. Perhaps they had difficulty following instructions, maintaining concentration, remembering a sequence of activities, or managing multiple tasks. Sometimes the issue was less about physical capability and more about confidence, anxiety, fatigue, or the ability to sustain performance in a demanding environment. These observations don't necessarily indicate a cognitive impairment, but they should make us consider whether our assessment is capturing the factors that matter most to that person's ability to work.

I believe this is an area where we, as rehabilitation professionals, need to improve. We talk frequently about treating the whole person, but are we consistently applying that philosophy when evaluating someone's capacity to return to work? If we only assess physical abilities when other functional limitations are clearly affecting performance, we may be doing our patients a disservice. We may also be providing employers, physicians, and other stakeholders with an incomplete picture of what that individual needs to successfully return to their occupation.

One of the places we can begin addressing this is through the Job Demands Analysis (JDA). Traditionally, a JDA documents the physical requirements of a job, often in considerable detail. We measure forces, distances, frequencies, working heights, and the duration of specific activities. Those measurements are essential, but they don't necessarily describe everything required to successfully perform the job.

Consider a forklift operator working in a busy manufacturing facility. We can document the physical requirements of climbing into the forklift, turning the steering wheel, operating the controls, and handling materials. But what about the continuous attention needed to monitor pedestrians and surrounding equipment? What about judging distances, recognizing hazards, remembering safety procedures, or responding appropriately when something unexpected happens? These cognitive requirements are just as much a part of the job as its physical requirements. The same can be said for an assembly worker responsible for identifying defects, a nurse managing competing patient needs, or a warehouse employee processing orders while working under time constraints.

These examples illustrate why cognitive demands should receive more attention during our job analyses. We should be considering the attention, memory, decision-making, information processing, and problem-solving required to perform essential job functions. We should also consider how these demands change throughout a shift, particularly when workers experience interruptions, competing priorities, fatigue, or increased production expectations. A job that appears relatively simple when one task is observed in isolation may become considerably more demanding when performed continuously in a real work environment.

This becomes particularly important when we are evaluating individuals who may have limitations beyond their physical abilities. Consider someone returning to work following a concussion or traumatic brain injury. They may demonstrate adequate strength, mobility, and physical endurance, yet continue to experience difficulties with concentration, processing information, or managing cognitive fatigue. If we haven't identified the cognitive demands of their occupation, how can we adequately determine whether their functional abilities match the requirements of the job?

This doesn't mean every JDA needs to include an extensive cognitive assessment or that every patient undergoing an FCE requires formal cognitive testing. It does mean we need to recognize when cognitive demands are relevant and when additional evaluation may be appropriate. We also need to distinguish cognitive impairment from the psychological and behavioral factors that may influence performance. Pain, anxiety, fear of reinjury, and reduced confidence can affect how someone approaches work without necessarily indicating an underlying cognitive disorder. These differences matter, and understanding them requires sound clinical reasoning and, when appropriate, collaboration with other healthcare professionals.

One of the principles we've emphasized throughout Matheson's approach to occupational rehabilitation is that the work itself should serve as the reference standard. If we want to determine whether someone can return to a particular job, we first need an accurate understanding of what that job requires. That principle should apply to cognitive demands just as it does to physical demands. We cannot meaningfully compare a person's functional abilities with job requirements that we haven't adequately identified.

I don't believe the answer is to make every assessment longer or more complicated. Instead, we need to become more thoughtful about what we're assessing and why. Sometimes a traditional physical FCE will provide the information needed to make an appropriate return-to-work recommendation. Other times, we may need additional information about cognitive abilities, behavioral factors, psychological considerations, or the interaction between these areas. Recognizing those situations is part of being a skilled clinician.

Occupational rehabilitation has made tremendous progress in how we measure and understand physical function. We should be proud of that progress, but we shouldn't allow our familiarity with physical testing to limit how we think about human performance. Our patients are more than their lifting capacity, and their jobs require more than physical strength.

If we're going to continue advocating for comprehensive, evidence-informed functional assessments, we need to acknowledge that cognitive demands are part of work. We need to identify them, understand their relevance, and consider them when making decisions about functional capacity and return to work.

Treating the whole person also means understanding the whole job. Perhaps it's time our Job Demands Analyses reflected that more consistently.