The job specification takes the job description and answers the
question, “What human traits and experience are required to do this job effectively?” It shows
the hiring criteria for the job, in terms of what kind of person to recruit and for what qualities
you should test that person. It may be one section of the job description, or a separate document.
Often the
employer makes it part of the job description.
Specifications for Trained versus Untrained Personnel
Writing job specifications for trained employees is
straightforward. Here your job specifications might focus mostly on traits like length of previous service,
quality of relevant training, and previous job performance. The problems are more complex when you’re filling jobs with
untrained people (with the intention of training them on the job). Here you must specify
qualities such as physical traits, personality, interests, or sensory skills that imply some
potential for performing or for being trained to do the job.
For example, suppose the job requires detailed manipulation in a
circuit board assembly line. Here you might want to ensure that the person scores high on
a test of finger dexterity. Employers identify such human requirements either through a
subjective, judgmental approach or through statistical analysis (or both). Let’s examine both
approaches.
Specifications Based on Judgment
Most job specifications come from the educated guesses of people
like supervisors and human resource managers. The basic procedure here is to ask, “What does
it take in terms of education, intelligence, training, and the like to do this job well?”
There are several ways to get these “educated guesses.” You could
review the job’s duties, and deduce from those what human traits and skills the job
requires. You can also choose them from the competencies listed in Web-based job
descriptions like those at www .jobdescription.com. (For example, a typical job description there
lists competencies like “Generates creative solutions” and “Manages difficult or emotional customer
situations.”) O*NET online is another source. Job listings there include lists of required
education and other experience and skills.