Why FDI Companies Must Build a Job Grading System Before Everything Else

Key Takeaways

• The most dangerous mistake FDI companies make is treating high turnover, pay inequity, and succession gaps as three separate problems. All three share the same root cause: the absence of a job grading system.
• Vietnam’s Decree 145/2020 (Articles 50–51) requires companies with 10 or more employees to register internal labor rules and build a formal wage scale. Failing to publish a wage scale carries a fine of VND 5–10 million under Point a, Clause 1, Article 17 of Decree 12/2022.
• FDI companies in Vietnam have a 6.5% turnover rate, lower than that of local firms at 9.6% (TRS 2024). But mid-level staff leave early because they cannot see a clear career path. A job level framework gives each grade a defined progression route.
• The four-step implementation framework: audit current compensation against TRS data, design 8–12 grade bands using Mercer IPE, deploy with KPI linkage, then monitor turnover by grade at 6 months.

In 2025, 77% of companies in Vietnam reported difficulty filling skilled roles (ManpowerGroup 2026), while 46% of FDI companies said local labor quality did not fully meet their needs (PCI 2024, VCCI/USAID). Both figures reflect a hiring problem on the surface. The deeper issue is that most FDI operations do not have a job classification system that tells them what level they are actually hiring for.

A job grading system comes first because every other HR solution assumes it already exists.

A job grading system (also called a job classification system or job level framework) is a structured method for evaluating and ranking positions in an organization by skill requirement, scope of responsibility, and business impact. Instead of organizing people by job title, it organizes roles into grade bands, each with defined competency requirements and a corresponding salary range, creating a shared reference point for hiring, compensation, and career progression.

When an FDI company adjusts pay to retain talent, it needs to know which grade that role sits in and what the market P50 for that grade looks like. When building a talent development program, it needs to know what competencies each grade requires. When running succession planning, it needs to know the capability gap between the current role holder and a potential successor. Without a job grading system, all of these decisions are made on judgment and assumption.

Two concrete costs when FDI companies operate without a job grading system

The first cost is legal and compliance risk. Vietnam’s Decree 145/2020/ND-CP (Articles 50–51) requires any company with 10 or more employees to register internal labor regulations and build a formal wage scale, specifying job titles, grade levels, and a minimum 5% gap between pay steps, with input from employee representatives. Under Vietnam’s Labor Code 2019 (Articles 90 and 93), the wage scale is the legal basis for calculating pay, social insurance contributions, and personal income tax. Failing to publish a wage scale violates Point a, Clause 1, Article 17 of Decree 12/2022/ND-CP, with fines of VND 5–10 million. Without a structured grade framework, FDI companies often set pay ad hoc, creating social insurance contribution mismatches and exposure to back-payment demands.The second cost is mid-level attrition. FDI companies in Vietnam run a 6.5% turnover rate, better than the 9.6% average at local firms (TRS 2024). But that aggregate masks the real problem: mid-level employees leave earlier because they cannot see a defined career path. Without a job grading system, staff cannot answer the basic question of which grade they are at, what they need to reach the next level, or how long that typically takes. The cost of replacing a mid-level employee is equivalent to 50–75% of annual salary (Mercer). For a mid-size FDI operation, every percentage point increase in turnover compounds into significant annual recruitment spend.

What a job grading system unlocks when built correctly

A job grading system does more than keep FDI companies compliant and reduce attrition. When built on the right methodology, it opens two strategic capabilities most FDI operations in Vietnam currently lack.

Market-aligned compensation using real benchmark data

Once each role is assigned to a grade band, FDI companies can benchmark directly against TRS data by grade and industry, rather than comparing job titles loosely across the market. The Mercer IPE (International Position Evaluation) methodology evaluates roles across four dimensions: business impact, communication scope, innovation requirements, and technical complexity. This allows FDI companies to avoid two expensive scenarios: overpaying above the grade and inflating fixed costs, or underpaying relative to the market and triggering attrition. Vietnam’s progressive personal income tax structure adds another layer of complexity: misgraded pay can push employees into a higher tax bracket that reduces their net compensation satisfaction even when the gross figure appears competitive. After Unilever Indonesia implemented Mercer-based job grading across 5,000 employees, pay equity reached 95% and turnover fell by 25% (Mercer, 2021).

Clear career paths and a foundation for succession planning

87% of companies in Vietnam lack a formal succession plan (TRS 2025, survey of 678 companies). The barrier is rarely intended; it is the absence of a job grading system that would define the competency gap between the current role holder and the person who could fill it. When each grade has documented competency requirements, managers can identify high-potential internal talent and build structured development plans rather than hiring externally every time a key position opens. For younger FDI employees, knowing precisely what Grade 6 requires compared to Grade 5, and how long the transition typically takes, is a more effective retention mechanism than a salary increase alone.

A four-step implementation framework for FDI companies in the early stages

Step 1: Audit. Benchmark every current compensation level against TRS data by industry and company size, identifying which roles are paying above P75 and which sit below P50. At the same time, inventory and document all existing roles in the organization to create the input data needed for job evaluation. This is the step FDI companies most often skip when rushing to design grade bands without benchmark data first — the result is a job level framework that looks complete on paper but does not reflect actual market positioning.

Step 2: Design. Build 8 to 12 grade bands from entry-level to executive using the Mercer IPE methodology to evaluate each role. Every grade needs a representative job title, competency requirements, a salary band, and a minimum 5% step gap between levels in line with Decree 145/2020. For FDI companies with a global grading system already in place, this step also requires mapping Vietnam grades to the global framework to ensure consistency when transferring staff internationally.

Step 3: Deploy. Train managers to understand what each grade means and how to apply the grading system when making pay, hiring, and performance decisions. Link KPIs to grade level, communicate promotion criteria clearly to all staff, and integrate the grading system into the annual compensation review cycle from the first year of operation. This step determines whether the system is actually used or exists only as a compliance document.

Step 4: Monitor. Six months after deployment, assess the system’s health across four signals: attrition rate by grade, salary distribution within each band, internal promotion rate, and average time-in-grade. Any anomaly in any of these signals identifies a specific area that needs adjustment. Update the grading system periodically when new TRS data is released or when a significant organizational restructuring takes place.

Conclusion

A job grading system is the #1 HR priority, not because it is the most complex thing to build, but because every other HR solution assumes it already exists. Without it, FDI companies raise pay without knowing if they are paying the right grade, build training without knowing the right capability gap to close, and try to retain people without a career path to offer. The four steps above can be completed in 3 to 4 months with the right TRS data and evaluation methodology in place. Talentnet’s HR Strategy and Organizational Development service supports the full process from audit to monitoring, using Mercer TRS data and the IPE methodology applied across more than 1,000 companies in Vietnam.