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Job, Physical, and Cognitive Demands Analysis

Understanding the actual demands of the job

A Job Demands Analysis (JDA) is a structured assessment of the tasks, responsibilities, and functional demands associated with a specific job.

Benchmark Occupational Therapy completes workplace-based Job Demands Analyses to provide objective information about what a worker is required to do, how frequently tasks are performed, and the physical, cognitive, and environmental demands associated with successful job performance.

A JDA can support return-to-work planning, functional abilities comparison, accommodation decisions, rehabilitation planning, disability management, and Functional Capacity Evaluation interpretation.

What Does a Job Demands Analysis Assess?

The specific demands evaluated depend on the position and referral question.

A Job Demands Analysis may examine:

  • Essential job duties

  • Frequency and duration of work tasks

  • Lifting, carrying, pushing, and pulling

  • Standing, walking, and sitting requirements

  • Bending, crouching, kneeling, and climbing

  • Reaching and overhead activity

  • Repetitive upper-extremity activity

  • Hand use, gripping, handling, and fine motor demands

  • Work pace and productivity expectations

  • Visual demands

  • Cognitive and attentional requirements

  • Communication and interpersonal demands

  • Environmental conditions

  • Workstation and equipment setup

  • Schedule, shift structure, and opportunity for rest or position change

Scope of Demands Analysis

Depending on the referral question, the assessment may involve a comprehensive Job Demands Analysis or a more focused analysis of particular job requirements.

Job Demands Analysis (JDA) examines the overall duties and functional requirements of a position.

Physical Demands Analysis (PDA) focuses on the physical requirements associated with job tasks, including material handling, postures, mobility, forces, repetition, and related physical demands.

Cognitive Demands Analysis (CDA) focuses on cognitive, organizational, behavioural, and related demands such as attention, memory, task management, pace, communication, decision-making, and management of competing demands.

On-Site Workplace Assessment

Whenever possible, the JDA is completed directly at the worksite.

The occupational therapist observes the work environment, reviews the sequence of job tasks, speaks with relevant workplace representatives, and obtains objective measurements of the demands associated with the position.

This may include:

  • Observation of typical job tasks

  • Measurement of weights, forces, heights, distances, and work surfaces

  • Review of tools, equipment, and materials

  • Identification of task frequency and duration

  • Observation of work postures and movement requirements

  • Review of workflow and work organization

  • Photographs or diagrams, where appropriate and authorized

  • Clarification of essential versus occasional job duties

Where direct workplace observation is not possible, available job descriptions, employer information, photographs, video, or other documentation may be incorporated, although an on-site assessment generally provides the most complete information.

Physical Job Demands

Physical demands may be quantified using objective measurements and standardized terminology.

Depending on the position, the analysis may address:

  • Maximum and typical lifting requirements

  • Carrying distances

  • Push and pull forces

  • Floor-to-waist, waist-to-shoulder, and overhead handling

  • Static and dynamic standing

  • Walking distances

  • Sitting tolerance requirements

  • Stair and ladder use

  • Reaching demands

  • Repetitive movement

  • Hand strength and dexterity requirements

  • Sustained or awkward postures

Cognitive and Organizational Demands

For positions with significant cognitive requirements, the JDA may also examine the mental and organizational demands of the job.

These may include:

  • Sustained and divided attention

  • Working memory

  • Planning and organization

  • Problem-solving

  • Task switching

  • Processing speed

  • Following multi-step procedures

  • Managing interruptions

  • Prioritizing competing tasks

  • Accuracy requirements

  • Time pressure and deadlines

  • Written and verbal communication

  • Decision-making

  • Independent work and supervision requirements

This information can be particularly valuable when evaluating return to work following neurological injury, concussion, psychological injury, or other conditions affecting cognitive function.

Supporting Return-to-Work and Functional Assessment

A JDA can provide a clear benchmark against which an individual’s functional abilities can be compared.

It may be used to support:

  • Return-to-work planning

  • Functional Capacity Evaluations

  • Cognitive Functional Capacity Evaluations

  • Identification of job-task barriers

  • Graduated return-to-work planning

  • Workplace accommodation

  • Disability management

  • Rehabilitation goal setting

  • Determination of whether current functional abilities are consistent with job requirements

When completed in conjunction with a Functional Capacity Evaluation, the JDA helps ensure that assessment findings are interpreted in relation to the actual demands of the worker’s position.