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Theory of Constraints, Critical Chain Project Management, Lean : industry consulting & training - Marris Consulting
The Theory Of Constraints in service industry startups and SMEs
Melcion, Chassagne & Cie SeminarLate Summer 2026
To mark its 30th anniversary, Melcion, Chassagne & Cie organized a seminar and invited Philip Marris, CEO of Marris Consulting, to participate as an international expert in the Theory of Constraints—an approach that Melcion, Chassagne & Cie has long championed.
The seminar is organized in partnership with Bpifrance, which is hosting the event at its Paris headquarters.
Philip Marris’s presentation is one of the day's scheduled sessions; the program included numerous breaks (coffee, lunch, and a cocktail reception) allowing exchange ideas with their peers.
Date & Information
Date: Tuesday 25th of August 2026
Time: 8:30am to 7:30pm (CET / Paris)
Place: BPI France headquarter
Registration are closed
In his presentation, Philip Marris explains why and how the Theory of Constraints (TOC) is relevant for entrepreneurs, whether they are in a startup or an SME. Every organization, every company, has a constraint: a resource whose capacity is lower than that of the other resources and which therefore limits the overall performance. Identifying the constraint and focusing managerial attention on it is the approach advocated by the Theory of Constraints (TOC).
This approach was popularized by Eliyahu Goldratt's bestselling book The Goal, which has sold more than 11 million copies and has been translated into over 30 languages. However, the book presents the case of an engine manufacturing plant. In his presentation, Philip Marris explains how this approach can be applied in service organizations. A summarized version of the fundamentals of this the Theory of Constraints approach is illustrated by two different case studies.
Case #1: The case of a French insurance company that applied TOC to significantly improve its productivity and dramatically accelerate its claims management services.
Case #2: The case of an eight-person startup that has since grown to more than 100 employees. The company provides outsourced services for processing U.S. companies' sales tax filings, where regulations vary from one state to another, making monthly filings quite complex.
About Philip Marris
Philip started his Theory Of Constraints journey in 1986 when he joined Creative Output and worked with Eliyahu Goldratt, the founder of TOC and author of the worldwide bestseller “The Goal”. In 1994 he wrote a bestselling TOC textbook in French.
He is also a recognized Lean expert and combines Lean (Manufacturing/Engineering/Management) with TOC. He founded Marris Consulting based in Paris France in 2005.
Half their business is outside of France in Europe and the rest of the world. He is bilingual and bi-cultural French/English. He is very active in the TOC community. He has implemented TOC over 400 times in over 30 countries. His clients include: Abbvie, Air France, Altho Brets, Andritz-Laroche, ArcelorMittal, Ariane Group, Armée de l'Air et de l'Espace, Autoliv, BAE Systems, Boston Scientific, Budenheim, Bulgari, Embraer, Circor, Getinge, GSK, IamGold, Ipsen, Louis Vuitton, McDonald's, Osram, Procter & Gamble, Rolex, Safran, Siemens, SKF, Société Générale, SNCF, TDK, Thales, Valeo and Veolia.
To know more about the Theory of Constraints
About Marris Consulting
Marris Consulting is an industry consulting and training company specialized in the Theory of Constraints (ToC) and Critical Chain Project Management. We focus on improving the performance of manufacturing and process industries by using Constraints Management combined with Lean and Six Sigma. To boost project performance, we also use Critical Chain Project Management (CCPM), which we sometimes combine with Lean Engineering. Our 2-day performance audits, our performance consulting services and our project management, Lean, ToC & CCPM training by our industry consultants offer a wide range of solutions to help our clients around the world reach the highest possible levels of performance.