4.1. Graphic Rating Scale

The graphic rating scale, a trait method, is perhaps the most popular choice for performance evaluations. This type of evaluation lists the traits required for the job and asks the source to rate the individual on each attribute such as dependability and creativity. For example, the ratings can include a scale of 1–10; excellent, average, or poor; or exceeds, meets, or doesn’t meet expectations. A continuous scale allows the manager to put a mark on the continuum scale that best represents the employee’s performance. For example:

The disadvantage of this type of scale is that it is quite subjective. Thus, many organizations use a graphic rating scale in conjunction with other appraisal methods to further solidify the tool’s validity. For example, some organizations use a mixed standard scale, which is similar to a graphic rating scale. This scale includes a series of mixed statements representing excellent, average, and poor performance, and the manager is asked to rate a “+” (performance is better than stated), “0” (performance is at stated level), or “−” (performance is below stated level). Mixed standard statements might include the following:

• The employee gets along with most coworkers and has had only a few interpersonal issues.
• This employee takes initiative.
• The employee consistently turns in below-average work.
• The employee always meets established deadlines.

Figure 7.2. Example of Graphic Rating Scale

4.2. Essay Appraisal

In an essay appraisal, the source answers a series of questions about the employee’s performance in essay form. This can be a trait method and/or a behavioral method, depending on how the manager writes the essay. These statements may include strengths and weaknesses about the employee or statements about past performance. They can also include specific examples of past performance. The disadvantage of this type of method (when not combined with other rating systems) is that the manager’s writing ability can contribute to the effectiveness of the evaluation. Also, managers may write less or more, which means less consistency between performance appraisals by various managers.

Figure 7.3. Example of Essay Rating

4.3. Checklist Scale

A checklist method for performance evaluations lessens the subjectivity, although subjectivity will still be present in this type of rating system. With a checklist scale, a series of questions is asked and the manager simply responds yes or no to the questions, which can fall into either the behavioural or the trait method, or both. Another variation to this scale is a check mark in the criteria the employee meets, and a blank in the areas the employee does not meet. The challenge with this format is that it does not allow for more detailed answers and analysis of the performance criteria, unless combined with another method, such as essay ratings.

4.4. Critical Incident Appraisals

This method of appraisal, while more time-consuming to develop, can be effective because it provides specific examples of behaviour to anchor the ratings. With a critical incident appraisal, the manager records examples of the employee’s effective and ineffective behaviour during the time period between evaluations, which is in the behavioural category. When it is time for the employee to be reviewed, the manager will pull out this file and formally record the incidents that occurred over the time period. The disadvantage of this method is the tendency to record only negative incidents instead of positive ones. However, this method can work well if the manager has the proper training to record incidents (perhaps by keeping a weekly diary) in a fair manner. This approach can also work well when specific jobs vary greatly from week to week, unlike, for example, a factory worker who routinely performs the same weekly tasks.

4.5. Work Standards Approach

For certain jobs in which productivity is most important, a work standards approach could be the more effective way of evaluating employees. With this results-focused approach, a minimum level is set and the employee’s performance evaluation is based on this level. For example, if a sales person does not meet a quota of $1 million, this would be recorded as nonperforming. The downside is that this method does not allow for reasonable deviations. For example, if the quota is not met, perhaps the employee just had a bad month but normally performs well. This approach works best in long-term situations, in which a reasonable measure of performance can be over a certain period of time. This method is also used in manufacturing situations where production is extremely important. For example, in an automotive assembly line, the focus is on how many cars are built in a specified period, and therefore, employee performance is measured this way. Since this approach is centered on production, it does not allow for rating of other factors, such as ability to work on a team or communication skills, which can be important parts of the job.

4.6. Ranking Methods

In a ranking method system (also called relative method), employees in a particular department are ranked based on their performance. This system is a comparative method for performance evaluations. The manager will have a list of all employees and will first choose the most valuable employee and put that name at the top. Then he or she will choose the least valuable employee and put that name at the bottom of the list. With the remaining employees, this process would be repeated. Obviously, there is room for bias with this method. It may not work well in a larger organization, where managers may not interact with each employee on a day-to-day basis.