objectives and business goals while reviewing key processes that drive an organization. It
uses a set of quality management methods, mainly statistical methods, and creates a special
infrastructure of people within the organization (“Champions”, “Black Belts”, “Green Belts”,
“Yellow Belts”, etcetera.) who are experts in these methods. Each Six Sigma project carried
out within an organization follows a defined sequence of steps and has quantified value
targets, for example: reduce process cycle time, reduce pollution, reduce costs, increase
customer satisfaction, and increase profits.
Six Sigma Case at Starwood Hotels and Resorts
At Starwood Hotels and Resorts, the Six Sigma team called Black Belts used the five
step DMAIC process, which consists of defining, measuring, analyzing, improving, and
controlling. On the define stage in order to fulfil the customers’ satisfaction or the Sheraton
Service Promise, three key features were identified as follows: speed, empathy, and
efficiency. In addition, the six sigma team worked with data collected and analyzed by an
independent survey organization known as National Family Opinion. On the measure stage,
call logs were established to track speed, empathy of associate handling the call, and
efficiency of the staff charged with fixing the problem. On the analyze stage, Pareto charts
and other techniques were used for the analysis. On the improve stage, since there is always
space for improvement, the company is looking for ways how to make the parts of the
process (such as: telephone operators’ handling of requests, procedures for determining who
to call, engineering workloads) faster, more emphatic and more efficient in order to increase
customers’ satisfaction. On the control stage, there was controlling and monitoring to ensure
that the six sigma team became part of the property’s culture. There would be 12 to 18
months tracking, with monthly feedback to the manager or department head responsible for
the improvement of the Sheraton Service Promise program.