If any part of the company is lacking then it reflects on the company as a whole. It can also be harder to pinpoint which phase of the process is the one at fault. Big companies may have a hard time getting all the staff to understand and implement the goal and processes of a company’s objective. Every member of the team (in this case, the company) needs to be on the same page and work towards the same goals.
Six Sigma methodology requires a large amount of data, ranging from analysis to statistics. This is a long process that can take up a lot of time and effort. Even though large companies may have more information to gather, smaller companies are deterred from gathering this information because of its time consumption, which halts work and productivity for any given period of time.
With this methodology it can sometimes appear as though certain stages are necessary or desired however they can end up being inefficient of time and resources.
Another limitation of Six Sigma methodology is when there are so-called “experts” in the field that are, in fact, not that gifted at their job. Companies can waste a lot of time and money to find out that they were not being offered the best service and that many of changes are irreversible or very time consuming to change. Those that do not properly under the methods of Six Sigma methodology and bring those ideas to a company can have a negative effect on the business as a whole. It is necessary for a company to perform proper research when it comes to recruiting someone as a “Six Sigma Expert.”
While Six Sigma methodology is often thought of as a cost effective solution, this is only when the final stages of the process have been implemented. Prior to eliminating waste and increasing quality, there are a number of defects and investments to be made to reach the desired result. In order to have zero defects, a company has to test and try many methods and sometimes the overall improvement of the quality of a product ends up costing more than the original process.
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