How to Make Performance Appraisals More Objective

An appraisal rating should reflect how someone performed, not how their manager feels about them. In practice, the two are often confused.

Here is how to build an appraisal process where ratings are based on clear standards and real evidence.

Why Performance Appraisals Can Become Subjective

Subjectivity is rarely deliberate. It is usually built into the way appraisals are designed and completed.

• Undefined ratings. “Meets expectations” means something different to every manager. Without a shared definition, each one applies their own standard.
• Trait-based criteria. Criteria such as “attitude”, “initiative” or “team player” can only be judged by impression, so two managers can reach opposite conclusions about the same employee.
• Memory-based reviews. When an appraisal is completed once a year, the last few weeks tend to outweigh the other ten or eleven months.
• Unchecked bias. One strong skill lifts every other score. Employees who work like the manager are rated more favourably. Staff working from home are often rated lower than those the manager sees every day, simply because their work is less visible.

Using Clear Performance Criteria Instead of Personal Impressions

The most effective fix is to define what each rating looks like for the role before the review period begins. For a customer service role, that might look like this:

A few principles keep criteria useful:

• Rate behaviour, not personality. “Updates the team before deadlines slip” can be assessed. “Good communicator” cannot.
• Keep the list short. Four to six criteria that genuinely drive results in the role are more reliable than a long list of general competencies.
• Write descriptors with people who know the role. Criteria drafted by HR alone often miss what good performance actually looks like on the ground.

Reviewing Performance Against Agreed Goals and Responsibilities

An objective appraisal measures the employee against what they were asked to do. That means starting from the KPIs and responsibilities agreed at the beginning of the period, not measures introduced at review time.

Goals often change during the year, and the appraisal should reflect that. If an employee was moved from a sales target to supporting a system rollout in the second half of the year, rating them against the original sales target would be inaccurate.

The same applies to factors outside the employee’s control. A missed target caused by staff shortages, system outages or a change in business priorities should be recognised in the rating, rather than treated as an individual shortfall.

Using Evidence and Examples to Support Performance Ratings

Every rating should be backed by examples that someone else could review and understand. Useful sources include:

• Results against targets
• Samples of completed work
• Feedback from clients, colleagues or other managers
• The employee’s self-assessment, as one input rather than the deciding factor

The difference shows in the written comments. “Strong performer, works well” tells the employee very little. “Reduced invoice processing errors from 8% to 2% and trained two new starters on the system” explains exactly why the rating was given.

Evidence should cover the whole review period, not only recent weeks. As a simple rule, if a manager cannot support a rating with two or three specific examples, the rating should be reconsidered.

Keeping Appraisals Consistent Across Different Managers

Even with clear criteria and good evidence, two managers can rate similar performance differently. Consistency needs to be checked across the business, not only within each team.

• Calibration sessions. Before ratings are finalised, managers compare proposed ratings for similar roles and justify them against the shared criteria. Ratings that cannot be supported are adjusted.
• Rating patterns. If one team is rated almost entirely “exceeds” and another almost entirely “meets”, the difference is more likely to reflect the managers than the teams.
• Second-level review. Having the next-level manager review and sign off ratings adds a check on individual judgement.
• Manager capability. Applying a rating scale consistently is a skill. Leadership training that covers using criteria, gathering evidence and recognising bias makes calibration faster and less contentious.

Final Thoughts

An appraisal is objective when another manager, using the same criteria and evidence, would give the same rating. A structured performance appraisal process makes that the standard every cycle, and gives wider performance management decisions a fair basis.