Reliable measurement means that an employee's skill or competency can be measured how?

Reliable measurement refers to the consistency and dependability of an assessment tool in evaluating an employee's skill or competency. When we say that a measurement is reliable, it means that the results will yield similar outcomes when repeated under the same conditions.

By stating that it can be measured consistently across employees and raters, it indicates that any assessment method used should produce similar results regardless of who is conducting the evaluation and the specific employees being assessed. This consistency is crucial in human resources and compensation practices, as it ensures fairness in how employees are evaluated and helps in making informed decisions about performance, promotions, or training needs.

In contrast, the other options highlight variability and subjectivity in measurement, which undermines reliability. For instance, subjectivity across employees introduces personal biases, inconsistencies across raters imply different evaluative criteria, and measuring only once during employment does not capture the development or changes in an employee’s skills over time. Thus, the emphasis on consistency across both employees and raters solidifies why this is the correct choice regarding reliable measurement.