What type of data is most useful for tracking employee performance over time?

• A. Subjective opinions of supervisors.
• B. Rumors about performance.
• C. Personal feelings about each employee.
• D. Objective metrics such as sales per labor hour, attendance, task completion rate, and coaching progress.

Answer: (D)

Tracking performance over time is most effective when you use objective metrics that quantify what employees actually produce and how reliably they perform. Data like sales per labor hour, attendance, task completion rate, and coaching progress give you a consistent, time-stamped record you can trend, compare across people, and tie to specific interventions or targets. This kind of data stays stable across different observers and over different periods, making it possible to see true progress, identify patterns, and make informed decisions.

Relying on subjective opinions from supervisors introduces bias and variability, since judgments can be influenced by personal outlook or recent events. Rumors are unreliable and can spread misinformation, while personal feelings about an employee don’t provide comparable or repeatable measurements. Together, these kinds of input don’t offer the objective, trackable evidence needed to monitor advancement over time.