7-1 Work Study An Introduction to work study Mohamed Iqbal Pallipurath .
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Transcript of 7-1 Work Study An Introduction to work study Mohamed Iqbal Pallipurath .
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7-1
Work StudyWork Study
An Introduction to work study
Mohamed Iqbal Pallipurath
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7-2
Job design involves specifying the content and methods of job What will be done Who will do the job How the job will be done Where the job will be done Ergonomics: Incorporation of human factors
in the design of the workplace
Job DesignJob Design
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7-3
Design of Work SystemsDesign of Work Systems
Topics:
Specialization
Behavioral Approaches to Job Design
Teams
Methods Analysis
Motions Study
Working conditions
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7-4
Specialization in Business: AdvantagesSpecialization in Business: Advantages
For Management:
1. Simplifies training
2. High productivity
3. Low wage costs
For Labor:
1. Low education andskill requirements
2. Minimumresponsibilities
3. Little mental effortneeded
Table1
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DisadvantagesDisadvantages
For Management:
1. Difficult to motivatequality
2. Worker dissatisfaction,possibly resulting inabsenteeism, highturnover, disruptivetactics, poor attentionto quality
For Labor:1. Monotonous work
2. Limited opportunitiesfor advancement
3. Little control over work
4. Little opportunity forself-fulfillment
Table 2
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Behavioral Approaches to Job Behavioral Approaches to Job DesignDesign
Job Enlargement Giving a worker a larger portion of the total
task by horizontal loading
Job Rotation Workers periodically exchange jobs
Job Enrichment Increasing responsibility for planning and
coordination tasks, by vertical loading
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7-7
TeamsTeams
Benefits of teams Higher quality Higher productivity Greater worker satisfaction
Self-directed teams Groups of empowered to make certain
changes in their work process
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7-8
Methods AnalysisMethods Analysis
Methods analysis Analyzing how a job gets done Begins with overall analysis Moves to specific details
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Methods AnalysisMethods Analysis
Changes in tools and equipment
Changes in product designor new products
Changes in materials or procedures
Other factors (e.g. accidents, quality problems)
The need for methods analysis can come from a number of different sources:
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Methods Analysis ProcedureMethods Analysis Procedure
1.Identify the operation to be studied
2.Get employee input
3.Study and document current method
4.Analyze the job
5.Propose new methods
6.Install new methods
7.Follow-up to ensure improvements have been achieved
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7-11
Analyzing the JobAnalyzing the Job
Flow process chart Chart used to examine the overall
sequence of an operation by focusing on movements of the operator or flow of materials
Worker-machine chart Chart used to determine portions of a
work cycle during which an operator and equipment are busy or idle
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7-12
FLOW PROCESS CHARTJob Requisition of petty cash
Details of Method
ANALYST D. Kolb
PAGE1 of 2
Op
erat
ion
M
ove
men
t
Insp
ecti
on
Del
ay
Sto
rag
e
Requisition made by department headPut in “pick-up” basketTo accounting departmentAccount and signature verifiedAmount approved by treasurerAmount counted by cashierAmount recorded by bookkeeperPetty cash sealed in envelopePetty cash carried to departmentPetty cash checked against requisitionReceipt signedPetty cash stored in safety box
Figure 3
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7-13
Motion StudyMotion Study
Motion study is the systematic
study of the human motions used
to perform an operation.
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Motion Study TechniquesMotion Study Techniques
Motion study principles - guidelines for designing motion-efficient work procedures
Analysis of therbligs - basic elemental motions into which a job can be broken down
Micromotion study - use of motion pictures and slow motion to study motions that otherwise would be too rapid to analyze
Charts
Therbligs
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1. Eliminate unnecessary motions
2. Combine activities
3. Reduce fatigue
4. Improve the arrangement of the workplace
5. Improve the design of tools and equipment
Developing Work MethodsDeveloping Work Methods
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Working ConditionsWorking Conditions
Temperature & Humidity Ventilation
Illumination Color
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Working Conditions (cont’d)Working Conditions (cont’d)
Noise & Vibration
Causes of AccidentsSafety
Work Breaks
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Work MeasurementWork Measurement
Work measurement: Determining how long it should take to do a job.
Standard time
Stopwatch time study
Historical times
Predetermined data
Work Sampling
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Standard timeStandard time
Standard time: Standard time: The amount of time it should take a qualified The amount of time it should take a qualified worker to complete a specific task, working at a worker to complete a specific task, working at a sustainable rate, using given methods, tools and sustainable rate, using given methods, tools and equipment, raw materials, and workplace equipment, raw materials, and workplace arrangement.arrangement.
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Stopwatch Time StudyStopwatch Time Study
Stopwatch Time Study: Development of a time standard based on observations of one worker taken over a number of cycles.
The basic steps in a time study:1. Define the task to be studied
2. Determine the number of cycles to observe
3. Time the job
4. Compute the standard time
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Standard Elemental TimesStandard Elemental Times
Standard elemental times: Time standards derived from a firm’s historical data.
Steps for standard elemental times1. Analyze the job
2. Check file for historical times
3. Modify file times if necessary
4. Sum elemental times to get normal time
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Work SamplingWork Sampling
Work sampling: technique for estimating the proportion of time that a worker or machine spends on various activities and idle time.
Work sampling involves making brief observations of a worker or machine at random intervals
Work sampling does not require timing an activity continuous observation of an activity