Leadership Competency Assessment: From Gut Instinct to Strategic Diagnosis

Key Takeaways

• The biggest cost of not assessing leadership capability is not the cost of assessment, but the wrong appointments a company makes without realizing they are wrong until it is too late.
• According to Talentnet-Mercer 2025, in 2024, local firms experienced a voluntary turnover rate of 20.3% compared to 12.8% at multinationals, and much of this gap stems from management quality, where local companies often lack standardized competency assessments.
• When leaders are chosen by seniority or harmony rather than measured capability, companies tend to place the wrong person in critical roles and face attrition, succession crises, and stalled execution.
• An effective system combines a clear competency framework, objective multi-source assessment, a link to succession and development, and periodic review as capability requirements change.

Local Vietnamese firms are growing fast and transforming constantly, yet their leadership benches are still built largely on relationships and seniority. In an era where capability determines a company’s ability to grow, leadership competency assessment is a strategic starting point, not an HR formality.

Why leadership competency assessment is a strategic priority

For local firms, the cost of not knowing leadership capability shows up directly in two places, lost people and stalled execution. That is why leadership competency assessment is a strategic priority, not a box-ticking exercise.

The gap between the two types of company is concrete, and it is not only about turnover but about how leadership benches are built and assessed:

The turnover gap of nearly 1.6 times is not accidental. Much of it traces to the quality of management and leadership, where multinationals tend to standardize competency assessment while local firms still largely choose leaders by instinct.

At the market level, the capability gap is also measurable. Talentnet’s 2026 Vietnam Enterprise Workforce Capability Readiness report puts the average capability readiness index of Vietnamese firms at 65.8 out of 100, in the developing band. Assessment is the first step to knowing where the gap sits before investing to close it.

The mechanism behind those numbers is straightforward. Without objective assessment, leadership decisions rest on seniority, relationships, or impressions, and a company easily places the wrong person in a critical role. A single wrong leadership appointment rarely stops at one person; it pulls a whole team off course and eventually out the door.

This forces a reframe of what assessment is. It is not an administrative test run by HR. As Talentnet frames it, capability is the central operating system that determines the success or failure of every business strategy, so assessing it is a strategic diagnosis that turns hope into certainty. If assessment matters this much, the question is why most local firms still choose leaders by instinct.

Why choosing leaders by instinct and seniority is a strategic risk

The default in many local firms is to choose leaders by seniority, loyalty, or collective harmony, rather than measured capability. This creates strategic risk in several ways, each visible in business results:

Two factors make these risks hard to see. First, leaders tend to rate their own capability higher than reality, so self-assessment alone is not enough and an objective, multi-source view is needed. Second, capability requirements are shifting fast as AI and digital transformation change how work runs, so capability needs periodic re-assessment, not only at hiring or promotion. If instinct is not enough, the question is what a serious leadership competency assessment system involves.

Building leadership competency assessment into a strategic system

Assessment only creates value as a system tied to strategy, not a one-off test. Four components make up an effective leadership assessment framework:

• A clear management competency framework. Define what good leadership means for this specific business and tie it to its strategy, rather than borrowing a generic template that does not reflect the context.
• Objective, multi-source assessment. Combine perspectives from managers, peers, direct reports, and leadership assessment tools rather than self-assessment alone, to close the gap between self-perception and reality.
• A link to succession and development. Feed results into a nine-box grid, succession pools, and personalized development paths, turning assessment into action rather than leaving it on paper.
• Periodic review. Repeat on a cycle rather than once, because the capability that fits today may not meet tomorrow’s requirements.

Within the development component, most of a leader’s growth comes from real work rather than the classroom, as Gentherm Vietnam applies through the 70:20:10 model, with most learning happening on the job. Good assessment is what shows which experience to place a person in to grow fastest. For the formal-learning portion that complements on-the-job experience, Talentnet HR & People management courses offers management training programs for the succession pipeline. 

This is also where Talentnet positions its own solution. Its competency framework and objective competency assessment services, together with the 2026 capability readiness report, give companies a practical starting point to benchmark current capability and close the gap systematically.

Conclusion

In an economy where capability determines the ability to grow, knowing for certain who can lead is a competitive advantage, not a formality. Companies that move from choosing leaders by instinct to systematic competency assessment will see the result in retention and the speed of execution. Talentnet’s HR consulting services help businesses build that foundation, from the competency framework to assessment and development paths.