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Core Topics 10 min read

Measuring Psychological Stress at Work: 5 Scientific Methods

5 scientifically validated methods for assessing psychological stress: COPSOQ, KFZA, WAI, interviews and workshops compared.

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TL;DR – Key Takeaways

  • There are five main methods for assessing psychological stress: questionnaires (COPSOQ, KFZA), WAI, interviews and workshops
  • Standardized questionnaires offer the best effort-to-insight ratio
  • Method choice depends on company size, budget and objectives
  • Digital solutions combine advantages of different methods
Vergleich verschiedener Methoden zur Erfassung psychischer Belastung

Why Standardized Methods are Important

Assessing psychological stress in the workplace requires scientifically validated methods. Only then can you:

  • Achieve objective and comparable results
  • Measure changes over time
  • Ensure legally compliant documentation
  • Benchmark against other companies

The Joint German Occupational Safety and Health Strategy (GDA) explicitly recommends using recognized methods for psychological risk assessment.

Method 1: COPSOQ (Copenhagen Psychosocial Questionnaire)

The COPSOQ is one of the most widely used questionnaires worldwide for assessing psychosocial factors in the workplace.

Structure and Versions

  • Short version: Approx. 40 questions, ideal for screening
  • Medium version: Approx. 87 questions, standard for risk assessment
  • Long version: Over 140 questions, for scientific studies

Dimensions Covered

The COPSOQ assesses, among others:

  • Demands (quantitative, emotional, cognitive)
  • Influence and development opportunities
  • Social relationships and leadership
  • Job insecurity
  • Health and well-being

Advantages of COPSOQ

  • Scientifically validated and internationally recognized
  • Extensive benchmark database available
  • Free to use (Open Source)
  • Fully integrated in SafeMind

Method 2: KFZA (Short Questionnaire for Work Analysis)

The KFZA is a compact questionnaire developed specifically for workplace practice.

Structure

With only 26 questions, the KFZA captures the most important stress factors in a short time. It is particularly suitable for:

  • Quick initial assessments
  • Small and medium-sized enterprises
  • Regular brief surveys

Areas Covered

  • Scope for action
  • Variety
  • Completeness
  • Social support
  • Cooperation
  • Qualitative workload
  • Quantitative workload
  • Work interruptions
  • Environmental stressors
  • Information and participation
  • Company benefits

Method 3: WAI (Work Ability Index)

The Work Ability Index measures employees' subjectively perceived work ability.

Special Feature

Unlike COPSOQ and KFZA, the WAI doesn't focus on individual stress factors but on the resulting work ability. It evaluates:

  • Current work ability compared to best ever achieved
  • Work ability in relation to job demands
  • Number of current illnesses
  • Estimated impairment of work performance
  • Sick leave in the past year
  • Own prognosis of work ability
  • Mental performance reserves

Application Area

The WAI is particularly suitable for:

  • Workplace health management
  • Age-appropriate work design
  • Long-term studies on work ability

Method 4: Guided Interviews

This method involves conducting structured individual conversations with employees.

Implementation

A trained interviewer conducts conversations based on a prepared guide. Typical topics:

  • Work tasks and requirements
  • Work equipment and environment
  • Work organization and working hours
  • Social relationships
  • Stressors and resources

Advantages and Disadvantages

Advantages:

  • In-depth qualitative information
  • Individual follow-up questions possible
  • High acceptance among employees

Disadvantages:

  • High time and resource investment
  • No anonymity possible
  • Difficult to quantify results
  • Requires trained interviewers

Method 5: Facilitated Workshops (Analysis Workshops)

This method involves conducting group workshops with employees.

Process

Typically 6-12 employees from similar activity areas participate. The workshop includes:

  1. Introduction and goal explanation
  2. Collection of stress factors (e.g., using card queries)
  3. Evaluation and prioritization
  4. Development of measure proposals
  5. Documentation of results

Advantages and Disadvantages

Advantages:

  • Direct involvement of employees
  • Team-based measure development
  • High acceptance of results
  • Quick identification of action areas

Disadvantages:

  • Group dynamics can influence results
  • No anonymity
  • Requires experienced facilitation
  • Difficult for sensitive topics

Method Comparison: Which Method for Which Purpose?

Criterion Questionnaire Interview Workshop
Anonymity High None None
Time required Low High Medium
Cost Low High Medium
Quantifiability High Low Medium
Depth Medium High Medium
Comparability High Low Low

Our Recommendation

For most companies, we recommend a combination of standardized questionnaire and supplementary workshops:

  1. Questionnaire for broad, anonymous assessment
  2. Workshops for deeper exploration of critical areas and measure development

SafeMind combines the scientifically validated COPSOQ questionnaire with automatic evaluation, giving you the best tool for a legally compliant and efficient psychological risk assessment.

Frequently Asked Questions

Which method is best for psychological risk assessment?

There is no universally best method. For most companies, a standardized questionnaire like COPSOQ works best as it is anonymous, scientifically validated, and easy to evaluate.

Can I combine different methods?

Yes, combining different methods is actually recommended. A questionnaire provides quantitative data, while workshops enable deeper exploration and measure development.

How long does the COPSOQ survey take?

The medium version of COPSOQ (87 questions) takes about 15-20 minutes per participant. The short version can be completed in 10 minutes.

Glossary Terms in This Article