Page 15 - Design for Six Sigma for Service (Six SIGMA Operational Methods)

Chapter
1

Six Sigma in
Service Organizations

1.1 Introduction to the Service Industry

Entities in the service industry are called service organizations. Many service
organizations are profit-earning business enterprises, such as restaurants,
hotels, and retail stores; some service organizations are nonprofit organi-
zations, such as universities and post services. In any service organization,
however, one or more kinds of services are provided to customers. The
service industry exhibits some distinct features that are not found in the man-
ufacturing industry. Based on the work of Sasser, Olsen, and Wyckoff (1978),
these distinct features include
1. Many services are intangible; they are not things like hardware.
2. Many services are perishable; they cannot be inventoried.
3. Services often produce heterogeneous output.
4. Services often involve simultaneous production and consumption.
However, behind these apparent differences, there are also many simi-
larities between the manufacturing and service industries. Figure 1.1
shows a generic business operation model for manufacturing-oriented
companies.

A manufacturing-oriented company will provide one or many kinds of
products to its customers. In any manufacturing-oriented company, there
will always be a core operation, which is usually the product development
and manufacturing process. Besides the core operation, there are also many
other business processes, such as business management, financial operation,
marketing, personnel, and supplier management.

Figure 1.2 illustrates a business operation model for many service organi-
zations. In this model, the service organization has a headquarter and many

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