The evaluation method occurs when they observe the work tasks of employees who portray certain traits and behaviors and base them on the results. The evaluation method used should meet the objectives and needs of the company. For example, the evaluation method that works best for the Maersk customer service management system is results-based. The best management rating system for Maersk customer service is results-based. Employee performance evaluation can be measured by on-time delivery, customer loyalty and meeting customer requests. When using a graphic rating scale, this allows the rater to use the scale to identify the level at which a particular trait, behavior, or performance is displayed. Evaluation forms are useful for linking job performance and integrating performance scales to certain jobs. The rating scale is set on a continuum that goes from low to high, from least effective to most effective, from excellent to poor. Graphic scales usually range from five to seven points. Numeric scales are used to evaluate performance. With these rating scales, these are assigned a numerical value assigned to an adjective from 1 to 5. 1 a scale needs improvement to 5 on the scale being