Marris Consulting, a company focused on improving sustainably
the performance of manufacturing and process industries

We have over 25 years of experience of combining the Theory Of Constraints (TOC) with Lean to go faster and further: 1 + 1 = 3

We help our clients reach and maintain ambitious levels of performance by combining actions on processes, organization, methodologies, tools … and people from the shop floor to the board room.

We are recognized experts in Constraints Management. We promote an integrated approach that combines Theory Of Constraints (TOC) to identify where to act and Lean and Six Sigma to improve performance.

We also use TOC's Critical Chain Project Management (CCPM) approach to boost project performance especially for New Product Development portfolios. We sometimes combine this with Lean Engineering (a.k.a Toyota New Product Development System).

Nouveaux locaux

Critical Chain Project Management training in English or French

Do you dare finish your projects on time, within budget and with full initial scope!

To understand how the project component of the Theory Of Constraints can transform your project design and execution (New Product Development, Engineering, Construction ...). -40% project duration reductions, +50% increase in productivity ... Presented by Philip Marris and Eric Robin CCPM expert.

Details and registration : Critical Chain Training

Visit our Marris Consulting Channel on YouTube

Discover all Marris Consulting videos on Theory of Constraints in production, project management, also the combination TOC & LEAN .... and many other topics on our Channel.

To visit Marris Consulting Channel

Logical Thinking Process 6-day course by Bill Dettmer

From 1st to 8th june 2016 - Paris

Logical Thinking Process, as the name suggests, uses sound logic and a processe to provide executives with an effective method for designing organizational strategy, planning its deployment, evaluating its effectiveness, and making corrections as needed in the shortest possible time.

 For more informations: Programme

TOC + Lean workshop in French or English - Paris in 2016

Using the Theory Of Constraints to boost your Lean programme

To better understand how Constraints Management can greatly improve your operational and financial performance and how to integrate this approach into a Lean program. This is the 5th repeat session of this popular event. It will be presented by Philip Marris a recognized expert of TOC and Lean.

Details and registration: Constraints Management


With our extensive experience of different industrial sectors and our expertise in change management we assist companies in all their departments especially: Manufacturing, Supply Chain, R&D and Industrialization, Marketing & Sales …

To follow us :

Project Focus

A Theory Of Constraints mission using CCPM in MRO
Discover how Marris Consulting helped an aircraft manufacturer to divide by two the time of aircraft maintenance.

Last publication (Fr)

6 indices que vous devriez investir dans le management de vos contraintes 
Si vous reconnaissez le cas de votre entreprise au travers d’une au moins de ces affirmations, vous gagneriez à vous intéresser au management de vos contraintes.

Book recommendation

"Be Fast or Be Gone"  by Andreas Scherer.
This business novel explains how to implement Critical Chain Project Management (CCPM - the project component of the Theory Of Constraints) and the results that can be obtained.

Video of the month

(En) How to identify bottleneck in production and project
Philip Marris explains why you are probably wrong about where your capacity constraints (bottlenecks) are.
This conference takes you through a few examples of false bottlenecks and the lessons learned.


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