Job Evaluation Methods Compared: JESAP vs. Hay vs. Mercer

A compensation team can agree that two roles belong in the same grade and still struggle to explain the decision six months later. The missing evidence might be an outdated job description, an undocumented factor selection, or a grade boundary nobody reviewed. Choosing a job evaluation framework should address those operating problems as well as the scoring method.

Publisher disclosure: CompBldr provides JESAP® evaluation software. This comparison uses current provider materials and separates documented capabilities from questions buyers should verify. Legal references are general information, not legal advice; a framework or software product does not guarantee compliance.

What Is a Job Evaluation Framework?

A job evaluation framework assesses the relative value of a role from its requirements and responsibilities, rather than the performance or salary of its current employee. Point-factor evaluation uses documented factors and scoring rules to support consistent comparisons.

Hay, Mercer IPE, and JESAP use different factor structures. Their headline counts are not a ranking of quality: factors can contain multiple dimensions, and implementation affects the result. To see how factor definitions and score review work in a product, explore the job evaluation workflow in CompBldr.

What Makes a Grade Decision Reviewable?

Start with an approved job description, record the evidence behind each factor selection, and review the proposed grade against your configured boundaries. A title or total score without that context is difficult for another evaluator to reproduce. Clear distinctions between job grades and job levels also prevent a career-level label from becoming an unexplained pay-band assignment.

Legal requirements depend on the jurisdiction

The EEOC explains that the US Equal Pay Act focuses on substantially equal work and job content, not titles. It does not endorse a particular vendor methodology.

Article 4 of Directive (EU) 2023/970 calls for objective, gender-neutral criteria including skills, effort, responsibility, and working conditions. The European Commission identifies 7 June 2026 as the national transposition deadline. That is not a single deadline for every employer reporting duty. Check the applicable national rules and implementation requirements with qualified advisers.

A documented evaluation can contribute to a pay equity review or pay transparency process. Factor count alone does not establish that a method is legally sufficient, that a pay difference is lawful, or that a vendor is noncompliant.

Hay / Korn Ferry: Core Factors and Implementation Options

Korn Ferry's methodology training identifies three core factors: Know-How, Problem Solving, and Accountability. Its Architect software embeds Hay evaluation alongside job and career architecture. The operating model should therefore not be described as universally dependent on an external consultant.

Working conditions also need an accurate comparison. Korn Ferry publishes a Working Conditions Guide Chart with four dimensions, assessed independently of core role content. Ask whether that chart is included and applied in the implementation you are evaluating.

What to check before choosing Hay

Request a sample evaluation showing the guide charts used, the job evidence, the review process, and the resulting grade relationship. If you already use Hay, evaluate whether improving the evidence and calibration process would solve the problem before replacing the methodology. Confirm licensing, training, software, and advisory scope directly rather than assuming an implementation cost.

Mercer IPE: Five Factors and Position Classification

Mercer's current US IPE overview lists five factors: Impact, Communication, Innovation, Knowledge, and Effort. Effort includes physical or sensory strain and challenging working conditions.

Mercer's eIPE learning materials describe factor-based evaluation and position classification, with license access required for that course. Do not assume a universal 0–5 scale, a mandatory consultant-led process, or identical scoring arrangements across implementations.

What to check before choosing IPE

Ask how the evaluated position class connects to your internal grades, how organizational sizing is handled, and who reviews changes. If you use Mercer survey data, confirm the survey matching process and survey provider coverage for your roles and locations. Evaluate the actual setup rather than inferring a legal gap from a factor label.

JESAP: Fifteen Factors Across Four Categories

CompBldr's JESAP® methodology page describes 15 factors organized as follows:

• Knowledge and Skill Requirements: 6. General experience, management experience, education, initiative and ingenuity, mental demand, and analytical ability and problem solving.
• Contacts and Human Relations: 2. Contacts with the public and contacts with employees.
• Responsibilities: 4. Work of others, funds and property, accuracy, and accountability for end results.
• Efforts: 3. Machine and computer operations, working conditions and hazards, and physical demands.

The categories total 15. Scores are compared with your organization's grade structure, with review before the result is carried into job architecture. More factors do not automatically prove greater legal protection or a better evaluation.

Worked example: review a boundary decision

Illustrative example, not a standard JESAP scale: suppose an organization defines Grade 5 as 261–330 points and Grade 6 as 331–400. A role scoring 294 falls within its Grade 5 range. A revised role scoring 331 reaches the next boundary, but reviewers should examine the changed job evidence and factor selections before confirming a new grade. These ranges are hypothetical; your configured boundaries govern the decision.

Once confirmed, a grade can support salary-band design using market benchmarking. Evaluation establishes internal role relationships; it does not by itself determine a market salary.

Framework Comparison: Hay, Mercer IPE, and JESAP

Use this table to structure a vendor discussion. It compares published methodology and operating options, not legal certification or independently tested performance.

How to Choose a Framework for Your Organization

Choose around the work you need to evaluate and the process your team can maintain. An employee-count threshold alone is not a reliable selection rule.

• Consider Hay when you want to retain or evaluate a Hay-based job architecture and can confirm the training, guide-chart access, software, and working-conditions approach you need.
• Consider IPE when position classification and cross-location consistency are priorities, and its configured evaluation and survey relationships suit your organization.
• Consider JESAP in CompBldr when your team wants in-house factor scoring, visible definitions, retained versions, and grade review connected to compensation workflows.

Ask each provider to walk through the same sample roles, including a difficult boundary case. Have HR gather role evidence, an evaluator score the jobs, a second reviewer challenge the rationale, and the compensation lead confirm grade and salary-range relationships. Check career-level criteria separately from grade scoring.

A useful pilot exposes disagreements rather than hiding them. Record which factor changed, what evidence supported the change, and who approved it. Compare the effort required to maintain the process after the initial setup; request current pricing and implementation terms directly.

How CompBldr Supports the JESAP Evaluation Workflow

JESAP® Studio displays factor definitions and degree selections during scoring. The running total and proposed grade support evaluator review. CompBldr's official Job Evaluation page describes saved versions with factor scores, evaluator details, and timestamps, plus comparisons between evaluation versions.

Review the result against your configured grade boundaries before using it downstream. Connect the approved structure to salary structure management, compensation planning where configured. Confirm permissions, retention, integration scope, and reporting requirements for your implementation.

The decision is practical: can your team explain the scoring, reproduce the review, and keep the grade and pay workflows consistent? Bring that workflow to the demo instead of selecting a method solely because it has more factors.