The theory of restrictions, developed by Dr. Eliyahu Moshe Goldratt in the 1980s, identifies the factors that prevent your company from achieving its objectives. The theory measures operational performance in key areas and uses the results to streamline operations. While there is always another constraint that replaces the one that is identified and eliminated, the repeated application of theory can lead to continuous improvement, increase efficiency, and allow your company to achieve greater benefits. Constraint theory is a broadly applicable approach to managing business operations within an organization.
Basically, constraint theory is a management philosophy designed to help organizations achieve their objectives. The idea is to identify the organization's objectives, identify the factors that hinder the achievement of those objectives, and then improve business operations by continuously striving to mitigate or eliminate limiting factors. Limiting factors are called bottlenecks or restrictions. At any given time, an organization faces at least one constraint that limits business operations.
Usually, as a constraint is removed, another constraint will emerge. The organization should then focus its attention on the new constraint. And this process is continuously repeated. According to the theory of constraints, the best way for an organization to achieve its objectives is to reduce operating expenses, reduce inventory, and increase performance.
Constraint theory includes three basic principles, six steps for implementation, and a five-step thinking process. Intellectual property (IP) defines and protects the sources of goods and services in the marketplace, the products and services offered for sale, and the content surrounding those offerings. The most important operational measures you can take relate to performance, defined as sales revenue minus inventory costs and operating expenses. In addition, some say that Goldratt's theory of constraints borrows ideas and concepts from previous studies and theories, but Goldratt does not recognize these contributions to his theory.
While some restrictions may limit production volume and affect performance, removing such restrictions is only effective if it results in an increase in revenues greater than the increase in operating costs. To correctly identify the main constraints that limit your company's performance, consider operating expenses. The Theory of Constraints considers all processes as a chain of events that operates in a certain order. Drum Buffer Rope is a constraint theory solution for scheduling and managing constrained operations.
Nearshoring, the process of relocating operations closer to home, has become an explosive opportunity for U.S. and Mexican companies to collaborate like never before. When you identify the constraints that prevent increasing profitability, include operating expenses in your assessment. This mentality must be applied to the entire operation to identify and expand the critical constraint.
If the production process involves three machines (one can produce 10 products per hour, another can produce 20 products per hour, and the third can only produce 3 products per hour), then the first must operate two machines so that they produce only 3 products per hour to keep up with the bottleneck machine. Therefore, you must focus your energy on reducing operating expenses, inventory, and investment while increasing performance.