Executive Shirt Company Inc

Case Analysis: Executive Shirt Company, Inc.Operations Management - I PGP1 Section B Group 4

Group MembersAMARENDRA SAHOO PGP2011533 BHAWNA GOKANI PGP2011595 CHATARKAR ANURAG MAHADE PGP2011600 C.LALRUATSANGA 2011FPM06 RUPSA CHAKRAVARTY PGP2011837 SAARANG K. MEHTA PGP2011841 UTKARSH SINGH PGP2011923

Case Analysis: Executive Shirt Company, Inc.Summary: Mr. Dwight Collier, Gen. Manager of Executive Shirt Company (ESC) is planning to introduce customized shirts in his current production facility since they can fetch 75% more price as compared to regular shirts. Currently, ESC is manufacturing 16,000 shirts per month and they plan to manufacture 2,000 customized shirts per month without hampering the current production. The company has 5 departments, namely, Cutting: 1 Machine, 4 Workers Sewing: 48 Machines, 48 Workers Inspection: 4 workers Ironing: 4 Machines, 4 Workers Packaging: 4 workers Indirect Workers (material handlers) : 4 Workers

Mr. Collier introduced a change in the manufacturing process by introducing a Laser Cutting Machine for customized shirt. He requested two of his managers, Mike and Ike to devise a production plan to maximize the profit from both the products. The highlights of their plans are

Mikes Plan: To go with one production line manufacturing both the

products simultaneously (other than the cutting process) o o Eight Batches of regular shirts with 5 shirts each One batch of 5 custom shirts

Ikes Plan: To go for a separate production line for regular and

customized shirt o o Eight Batches of regular shirts with 6o shirts each One batch of 5 custom shirts

Fig 1. Process Flow DiagramCurrent Production Process

Current Production ProcessTime required for producing one unit from laying and cutting operation=120/60*8=0.25 min Table 1.1. Current Production Plan

Operation Make Collar Make Cuffs Make Sleeves Make Front Make Back Join Shoulder Attach collar Attach sleeves Stitch Down sleeves Sew Side seam Attach cuffs Hem Button Inspect Iron Fold Package

Regular Shirt Labour Content 3.90 2.00 0.65 2.50 1.70 0.66 1.65 1.55 0.65 1.80 1.55 1.70 1.50 1.95 1.75

Number of workers 8 4 2 6 4 2 4 4 2 4 4 4 4 4 4

Time required for producing one unit (in min.) .4875 .5 .325 .41 .42 .33 .41 .39 .32 .45 .39 .42 .38 .49 .42

From the table it is clear that cuff making is the slowest process and hence the cycle time of Regular Shirt making is equal to the time of cuff making=0.5 min.

Table 1.2. Current Production Plan Quantity Actual Cycle Time (min/shirt) Production Capacity (shirts/day) WIP Inventory Total Inventory Bottle neck time Bottle neck time Obtained Value Bottle Neck = 30 min per batch 0.5 per shirt

Bottle Neck = 30 min per batch

480/0.5 =960 units

Cutting + Other operations WIP/production Capacity 800/960

10800+960 =11760

Manufacturing Lead Time(days) Capacity Utilisation

Input to Output

11760/960 =12.25

Actual Production : Production Capacity

83.33%

Direct Labour Utilisation(min/shirt ) Direct Labour Cost ($/shirt) Direct Labour Utilisation

Direct Labour per unit

Cutting + Other operations

25.51+4(0.25)= 26.51

Total labour cost per unit of production

Labour cost =64 * 8*6

3072/800=$ 3.84/shirt

Labour utilized/ Labour (800 * 26.51)/ Available (8*60*64)

69.03%

Fig 2: Process Flow DiagramMikes Plan

Mikes Production PlanTime required for producing one unit from laying and cutting operation=120/60*8=0.25 min whereas the cycle time of laser cutting machine is 2.5/5=0.5 Table 2.1. Mikes Production Plan

Operation Make Collar Make Cuffs Make Sleeves Make Front Make Back Join Shoulder Attach collar Attach sleeves Stitch Down sleeves Sew Side seam Attach cuffs Hem Button Inspect Iron Fold Package

Regular Shirt Labour Content 3.90 2.00 0.65 2.50 1.70 0.66 1.65 1.55 0.65 1.80 1.55 1.70 1.50 1.95 1.75

Number of workers 8 4 2 6 4 2 4 4 2 4 4 4 4 4 4

Time required for producing one unit (in min.) .4875 .5 .325 .41 .42 .33 .41 .39 .32 .45 .39 .42 .38 .49 .42

From the table it is clear that cuff making is the slowest process and hence the cycle time of Mikes Shirt making process is equal to the time of cuff making=0.5 min.

Table 2.2. Mikes Production Plan

QuantityActual Cycle Time (min/shirt) Production Capacity (shirts/day) WIP Inventory

Obtained Value(Regular and Custom Shirts)Bottle neck time Bottle Neck = 30 min per batch 0.5 per shirt

Bottle neck time

Bottle Neck =40 min per batch

480/0.5=960 units

Total Inventory


1800+180 =1980


Input to Output

1980/960=12.58


93.75%




25.51+0.5=26.01


Labour cost =65* 8 3120/900=3.47 *6

Labour utilised : Labour Available

Labour Utilised = 900 * 26.01

75.02%

Fig 3: Process Flow DiagramIkes Plan Regular Shirt Custom Shirt

Ikes Production PlanTable 3.1. Ikes Production Plan

A. Regular Shirt ProductionOperation Make Collar Make Cuffs Make Sleeves Make Front Make Back Join Shoulder Attach collar Attach sleeves Stitch Down sleeves Sew Side seam Attach cuffs Hem Button Inspect Iron Fold Package Regular Shirt Labour Content 3.90 2.00 0.65 2.50 1.70 0.66 1.65 1.55 0.65 1.80 1.55 1.70 1.50 1.95 1.75 Number of workers 7 3 1 5 3 1 3 3 1 3 3 3 3 3 3 Time required/lbr/shrt (in min) .56 .67 .65 .5 .57 .66 .55 .52 .65 .6 .52 .57 .5 .65 .59

Table 3.2. Ikes Production Plan

B. Customized ShirtOperation Make Collar Make Cuffs Make Sleeves Make Front Make Back Join Shoulder Attach collar Attach sleeves Stitch Down sleeves Sew Side seam Attach cuffs Hem Button Inspect Iron Fold Package CUSTOM Shirt Labour Content 3.90 2.00 0.65 2.50 1.70 0.66 1.65 1.55 0.65 1.80 1.55 1.70 1.50 1.95 1.75 Number of workers 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Time required/lbr/shrt (in min) 3.90 2.00 0.65 2.50 1.70 0.66 1.65 1.55 0.65 1.80 1.55 1.70 1.50 1.95 1.75

Table 3.3. Ikes Production Plan Quantity Actual Cycle Time (min/shirt) Production Capacity (shirts/day) WIP Inventory Total Inventory Bottle neck time Bottle neck time Obtained Value(Custom Shirts) Bottle Neck = 3.9 min per shirt 3.9 per shirt

Bottle Neck =3.9 min per shirt

480/3.9 =123 units


45+5 =50


Input to Output

50/123 =0.41


81.3%




25.51+0.5 =26.01


Labour cost =16* 8 768/100=7.68 *6

Labour utilised : Labour Available

Labour Utilised = 100 * 26.01

33.86%

Table 4: Comparison of Mikes and Ikes Production PlanQuantity Current Process Regular Shirts Mikes plan Regular & Custom shirts 0.5 Ikes plan Regular Shirts 0.67 Ikes plan Custom Shirts 3.9

Actual Cycle Time(min./ shirt) Manufacturing Lead Time ( days) WIP Inventory (shirts) Production capacity ( shirts/ day) Capacity Utilization

0.5

12.25

2.06

12.58

0.41

11760

1980

9060

50

960

960

720

123

83.33%

93.75%

111.11%

81.3%

Direct Labour content (min/shirt) Direct Labour utilization Direct labour Cost ( $/ shirt )

26.51

26.01

26.51

26.01

69.03%

75.02%

90.17%

33.8%

3.84

3.47

3.43

7.68

Table 5: Cost Comparison of Mikes and Ikes Plan A. For Normal Shirts Mikes plan Raw materials Direct labor Indirect labor Other Indirect Cost Total manufacturing Cost Retail price Profit/shirt $7.00 $3.46 $.66 $4.50 $15.62 $50 $34.38 Ikes plan $7 $3.32 $.66 $4.50 $15.48 $50 $34.52

B. For Customized Shirt Mikes plan Raw materials Direct labor Indirect labor Other Indirect Cost Total manufacturing Cost Retail price Profit/shirt $7.7 $3.46 $.66 $4.50 $16.32 $87.5 $71.18 Ikes plan $7.7 $7.68 $.66 $4.50 $20.54 $87.5 $66.96

Conclusion: From Table 5: Cost Comparison of Mikes and Ikes Plan, we can seethat the total profit per shirt from Mikes plan is greater $4.08. Thus, Mikes plan is better.

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Executive Shirt Company Inc