What Is a Time Study?
A time study is the systematic observation, measurement, and analysis of work activities to determine how long tasks should take when performed using an efficient and standardized method.
Time studies are used to establish fair labor standards, improve productivity, reduce waste, improve workflow, identify automation needs, optimize staffing levels, and support continuous improvement initiatives. The practice originated with Frederick Winslow Taylor in the late 1800s and remains one of the most powerful tools available for improving operational performance.
Today, organizations use time studies to: - Establish labor standards - Improve workforce productivity Reduce Non-Value Added Costs, Identify Staffing Level and Needs- Reduce bottlenecks - Improve scheduling - Support cost estimation – Identify Automation Opportunities and Benefits, Balance workloads - Improve workflow design - Support Lean and Six Sigma initiatives
Why Are Time Studies Important?
Most organizations make critical decisions based on assumptions: - How many people should be scheduled? - How long should a task take? - Where are bottlenecks occurring? - What is the true labor cost of a product or service?
Without objective measurement, these questions are difficult to answer accurately. Time studies provide factual, data-driven answers.
By observing work as it occurs, organizations gain visibility into: - Value-added activities - Non-value-added activities - Delays and waiting - Rework - Excess motion - Process variation
The result is better operational decisions and improved productivity.
Time Study vs Time and Motion Study
Although the terms are often used interchangeably, they focus on different aspects of work.
Time Study focuses primarily on: - How long processes and work takes - Cycle times, by work activity, by piece, - Labor goals and standards - Productivity measurement
Motion Study focuses primarily on: - How work is performed - Physical movements - Ergonomics - Workflow design - Elimination of unnecessary motion
Time and Motion Study combines both approaches. Organizations not only determine how long work takes but also identify opportunities to perform the work more efficiently. This combined approach produces the greatest operational improvements.
Common Applications of Time Studies
Time studies are used in virtually every industry where labor performance matters.
Manufacturing
Manufacturers use time studies to develop labor standards, balance production lines, identify non-value added time, value add-machine and labor time, identity automation opportunities, improve throughput, reduce setup times, and improve scheduling.
Healthcare
Healthcare organizations use time studies to improve patient flow, reduce non-value added time and steps, optimize staffing, reduce administrative burden, and identify workflow inefficiencies.
Warehousing and Distribution
Distribution operations use time studies to improve picking productivity, optimize travel paths, identify and reduce non-value added time, develop engineered labor standards, and improve workforce planning.
Retail
Retail organizations use time studies to identify staffing levels, improve labor scheduling, optimize stocking processes, identify and remove non-value added time and tasks and improve customer service workflows.
Government and Administrative Services
Time studies help public organizations understand workload requirements, improve service delivery, and optimize staffing levels.
The Seven Steps of a Successful Time Study
- Define the Purpose —
- Define the Scope —
- Develop a Process Map —
- Break Work into Elements —
- Determine Sample Size —
- Conduct Observations —
- Analyze and Improve —
What Is Standard Time?
Standard time is the total time allowed to complete a task, including allowances for personal needs, fatigue, and unavoidable delays. It serves as the foundation for labor planning, workforce scheduling, productivity measurement, cost estimation, and performance management.
Organizations should avoid establishing standards using raw observed times alone. Reasonable allowances must be incorporated to ensure standards remain achievable and sustainable.
How Time Studies Support Lean Operations
Lean focuses on eliminating waste and improving flow. Time studies provide the data needed to identify bottlenecks, delays, excess motion, process variation, and non-value-added activities. As a result, time studies are often one of the first tools used during Lean improvement initiatives.
Real-World Example
A manufacturer noticed significant variation in machine setup times between shifts. A time study revealed that top-performing operators averaged 5 minutes while others averaged 15 minutes. Further analysis identified different tool storage methods, inconsistent setup procedures, and excess searching.
After standardizing the process, average setup time fell to 6 minutes. Productivity improved, labor requirements decreased, and output increased. This shows how time studies transform observations into measurable operational improvements.
Frequently Asked Questions
How long does a time study take?
It depends on process complexity, required sample size, number of employees observed, and desired confidence level. Some studies take a few hours; others take several weeks.
Are time studies only for manufacturing?
No. Time studies are used in any environment people work in such as healthcare, Aero Space, technology, distribution, retail, government, field services, and administrative environments.
Do time studies improve productivity?
Yes. Time studies identify the best performance goals to implement, inefficiencies, waste, bottlenecks, and process variation that limit productivity.
What is the difference between normal time and standard time?
Normal time reflects observed performance adjusted for pace. Standard time includes allowances for fatigue, delays, and personal needs.
Conclusion
Time studies remain one of the most effective methods for understanding how work is performed and identifying opportunities for improvement. Organizations that rely on objective work measurement gain better visibility into productivity, staffing requirements, labor costs, and process performance.
When conducted correctly, time studies create the foundation for labor standards, productivity improvement, workforce planning, Lean initiatives, and continuous operational excellence.