What Is Job Analysis and Why Does It Matter?
Job analysis is the systematic process of collecting and analyzing information about a job's tasks, responsibilities, required knowledge, skills, abilities, and working conditions. It is the foundation for many HR functions, including job descriptions, compensation structures, performance management systems, recruitment criteria, training programs, and legal compliance. Without accurate job analysis, HR decisions are built on assumptions rather than data.
The SHRM People competency domain identifies job analysis as a fundamental HR knowledge area. Questions about job analysis methods, their applications, and their strengths and limitations appear on both the SHRM-CP and SHRM-SCP exams.
Job Analysis Methods
Questionnaires
Questionnaires are the most widely used job analysis method because they can collect data from many employees efficiently. There are two main types:
Structured Questionnaires: Standardized instruments with predetermined questions and response scales. The Position Analysis Questionnaire (PAQ), developed by Purdue University researchers, is one of the most well-known. The PAQ evaluates 194 job elements across six dimensions: information input, mental processes, work output, relationships with other persons, job context, and other characteristics. Structured questionnaires provide quantitative data that can be compared across jobs but may miss unique aspects of specific positions.
Open-Ended Questionnaires: Ask incumbents and supervisors to describe job tasks, responsibilities, and requirements in their own words. These capture richer, more detailed information but are harder to analyze systematically and may reflect individual biases.
Best practices for using questionnaires include: distributing them to multiple incumbents to capture the full range of job activities, having supervisors review responses for accuracy, and using clear, jargon-free language that respondents can understand.
Interviews
Job analysis interviews involve structured conversations with job incumbents, supervisors, and sometimes subject matter experts about the content, context, and requirements of a job.
Advantages: Interviews allow for follow-up questions, clarification of ambiguous responses, and exploration of tacit knowledge that incumbents may not think to include on a questionnaire. They also build rapport and demonstrate that HR values employee input.
Disadvantages: Interviews are time-consuming, especially for large numbers of positions. Results can be influenced by the interviewer's skill, the incumbent's communication ability, and impression management (incumbents may inflate the difficulty or importance of their work).
To maximize interview quality, use a structured interview guide with consistent questions, interview multiple incumbents for each job, and verify findings with supervisory review. Common interview questions include: "Describe a typical day in this role," "What are the most critical tasks you perform?", "What knowledge and skills are essential for success?", and "What are the most challenging aspects of this job?"
Observation
Direct observation involves watching employees perform their jobs and recording the tasks, methods, conditions, and time spent on each activity. This method is particularly effective for jobs with significant physical activity, repetitive tasks, or observable skill requirements.
Advantages: Observation captures actual behavior rather than self-reported descriptions, reducing the impact of memory bias and social desirability. It also allows the analyst to understand the physical environment and working conditions firsthand.
Disadvantages: Observation is impractical for knowledge work, managerial roles, or jobs with long task cycles. The Hawthorne effect (employees changing their behavior because they are being watched) can distort results. Observation also requires significant time commitment from the analyst.
Observation works best when combined with other methods. Observe the job first to understand the context, then use interviews or questionnaires to fill in details about cognitive demands, decision-making processes, and infrequent tasks that may not occur during the observation period.
Work Diaries and Logs
Work diaries require incumbents to record their activities, time spent, and tools used over a defined period, typically one to four weeks. This method captures the full range of job activities, including infrequent tasks that might be missed through observation or a single interview.
Advantages: Diaries provide detailed, real-time data about how employees spend their time and the variety of tasks they perform. They are useful for jobs with variable or unpredictable work patterns.
Disadvantages: Diary completion is burdensome for incumbents and compliance often declines over time. Data quality depends on the incumbent's diligence in recording activities. Some employees may alter their behavior to appear more productive or important while keeping the diary.
Critical Incident Technique
The Critical Incident Technique (CIT) collects descriptions of specific incidents where employees performed exceptionally well or exceptionally poorly. These incidents reveal the behaviors, skills, and knowledge that distinguish effective performance from ineffective performance in a given role.
CIT is particularly valuable for developing behavioral interview questions, performance evaluation criteria, and training content focused on the specific behaviors that drive success. However, it may not capture routine tasks and everyday responsibilities that are also important for the job.
Choosing the Right Method
The best job analysis method depends on the purpose of the analysis, the type of job, the number of positions, and available resources.
- For compensation decisions: Structured questionnaires (like the PAQ) and market pricing provide the quantitative data needed for job evaluation and pay structure design.
- For job descriptions: Interviews combined with questionnaires provide the detailed task and qualification information needed for comprehensive job descriptions.
- For physical jobs: Observation combined with interviews captures both the observable tasks and the contextual knowledge needed for effective performance.
- For ADA compliance: A combination of methods that identifies essential functions, physical demands, and reasonable accommodations is most defensible.
- For training development: Task analysis through interviews and CIT identifies the specific knowledge, skills, and behaviors that training programs should address.
Understanding how job analysis connects to organizational design and broader HR strategy strengthens your ability to answer SHRM exam questions that span multiple competency areas.
Legal Considerations
Job analysis has significant legal implications. Under Title VII and the Americans with Disabilities Act, selection criteria and employment decisions must be job-related and consistent with business necessity. Thorough job analysis provides the documentation needed to defend employment practices against discrimination claims. It also supports ADA compliance by identifying essential functions that must be performed with or without reasonable accommodation.
Use your study schedule to review job analysis alongside employment law topics, as the SHRM exam frequently combines these knowledge areas in scenario-based questions.
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Job analysis is a foundational HR knowledge area tested on both the SHRM-CP and SHRM-SCP exams. Questions cover methods, applications, legal considerations, and the connection between job analysis and other HR functions. Sign up for your free account to access practice questions that test your job analysis knowledge and build the expertise that supports every HR decision.