The takeaway
Treat sustainability as something to examine over time.
A broader question than retention
A stable headcount can conceal stalled development or work that people cannot sustain. Workforce Nexus uses the idea of a sustainable workforce as a question about continuing capability, viable work, and meaningful opportunity. It is not a proprietary index or an established score.
The conceptual foundation
Van der Klink and colleagues propose a capability-based definition of sustainable employability that emphasizes opportunities to achieve valued work outcomes across working life. The paper is conceptual; it does not establish a universal intervention effect. [1]
A subsequent critical reflection argues for clearer separation of causes and outcomes and more explicit attention to time. That debate is important: a broad, appealing concept should not be mistaken for a settled measurement model. [2]
Turn the concept into useful questions
Our suggested review asks: can people perform the work safely and effectively now? Are there realistic opportunities to develop? What conditions might make continued work difficult? Do employees value the opportunities available to them? Use these as prompts for inquiry, not items in an unvalidated scored assessment.
Pair the discussion with a few defined indicators already relevant to the organization. Depending on the question, these might include access to development, internal moves, or reported workload. Explain what each indicator can and cannot represent.
Use repeated observations
A single survey cannot show sustainability over a career. Decide when to revisit the same questions and how to interpret changes in the workforce population. A higher average score after dissatisfied employees leave, for example, needs a different interpretation from improvement among the same people.
Make progression credible
Describe the skills, experiences, and responsibilities associated with a next step. Do not promise promotion merely because someone completes training. Where openings are limited, be clear about other development possibilities instead of presenting a career ladder as a guarantee.
The practical implication
Focus on improving specific conditions and opportunities. Preserve uncertainty about the larger construct until the measurement and evidence justify a stronger claim.
Limitations & evidence boundaries
- The cited definition and critique are conceptual contributions, not a validated Workforce Nexus instrument.
- Long-term claims require longitudinal evidence; a one-time snapshot is insufficient.
Worker outcomes and organizational outcomes must be assessed separately. A proposed framework is not a validated instrument.
Sources
- Sustainable Employability: Definition, Conceptualization, and Implications: A Perspective Based on the Capability Approach
Study context & review scope
Design: Conceptual framework
Source check: 2026-09-07 · Journal publication page and abstract; capability-based definition only.
- Conceptual contribution; not a test of a Workforce Nexus framework or intervention.
- Critical Reflections on the Currently Leading Definition of Sustainable Employability
Study context & review scope
Design: Critical conceptual reflection
Source check: 2026-09-07 · Journal text; distinction between causes, outcomes, and longitudinal interpretation.
- Conceptual critique, not an intervention evaluation.
Revision history
- : Initial unpublished draft imported from the supplied build brief.
- : Rewritten with traceable research, explicit practical interpretation, and article-specific limitations. Human editorial approval pending.
- : Published following site-owner approval in the project conversation.