Employed or External Continuous Improvement: Finding the Right Fit for Your Operation

Most Operations Directors reach the same point sooner or later.

Yield may be fluctuating, changeovers may be taking up valuable shift capacity, customer non-conformances may be appearing more often, and day-to-day firefighting may be becoming the norm. At that point, a more structured approach to Continuous Improvement (CI) and Lean Six Sigma can help.

The question is: how do you source and apply it?

Historically, leadership teams fell into one of two camps:

1. Build an internal team: Recruit a CI Lead and one or more CI Facilitators to develop capability in-house.
2. Bring in external support: Engage a consultancy for a focused diagnostic or improvement programme.

Both approaches have clear strengths, as well as practical trade-offs. It is not always a simple either-or decision, though. A third option is a fractional model, which combines an external perspective with a deliberate transfer of skills to the internal team.

Below, we look at the advantages and limitations of employed and external CI specialists, before considering where a blended approach may work well.

1. The Employed Expert: The Case for the Internal CI Team

A dedicated Lean Six Sigma Black Belt or CI Manager can give operational improvement a clear home and a consistent focus.

The Pros of Employed Experts:

• Detailed operational knowledge: An internal specialist works within the business every day. They build an understanding of product variants, shop-floor relationships and the history behind equipment changes.
• Day-to-day availability: When an urgent bottleneck appears on Line 3 at 2 pm, an in-house engineer is already on site.
• Cultural understanding: Over time, an effective internal champion can build trust and become part of the fabric of the site.

The Pitfalls of Employed Experts:

• Ongoing investment: A capable in-house team represents a significant long-term commitment. For example, a senior CI Manager on £50,000–£80,000 and two or three CI Facilitators on £30,000–£50,000 each could mean an annual employment cost of over £200k and more once Employer National Insurance, pensions, bonuses, software licences, car allowances and recruitment costs are included. The right figure will, of course, depend on team size, location and package.
• Variation in practical experience: Lean Six Sigma qualifications can reflect very different levels of training and hands-on experience. Technical knowledge matters, but so do commercial judgement and the ability to bring experienced shift supervisors with you.
• Organisational blind spots: Over time, internal specialists can become close to established ways of working or be drawn into day-to-day priorities. That familiarity is valuable, but it can make long-standing assumptions harder to challenge.
• Dependence on the CI team: If specialists carry out improvement work on behalf of the operation, rather than building capability within it, progress can become dependent on their continued involvement. The stronger model is one in which managers and teams learn to solve problems themselves.

2. The External Expert: Traditional Consultancy Support

At the other end of the spectrum is the traditional management consultancy, bringing in an external team for a defined piece of work.

The Pros of External Experts:

• Independent perspective: An external specialist is less influenced by internal hierarchy and established assumptions, so they can review data, cycle times and scrap rates with fresh eyes.
• Experience across sectors: External Master Black Belts may work across a range of production facilities, supply chains and warehouse operations. That breadth can bring useful practices from sectors such as aerospace, automotive and FMCG.
• Specialist methods: Experienced practitioners can also provide access to techniques such as Design of Experiments (DOE), Statistical Process Control (SPC) and Measurement System Analysis (Gage R&R), which may not be needed often enough to justify maintaining in-house expertise.

The Pitfalls of Traditional External Engagements:

• Implementation can be uneven: Some engagements focus heavily on diagnosis and recommendations, with less support for the practical work of implementation. It is worth agreeing at the outset how changes will be embedded and sustained.
• Frontline engagement matters: Operators may be understandably cautious about advice from people who do not yet know the process as well as they do. Recommendations are more likely to last when external specialists involve the people doing the work and approach change with care.
• Costs need clear boundaries: Day-rate arrangements can become difficult to forecast if the scope changes. Clear deliverables, review points and expected operational benefits help keep the engagement proportionate.

The Comparison: What Do You Actually Need?

A Third Option: Fractional Support and Upskilling the People Doing the Work

The aim of continuous improvement is not simply to create another department. It is to make improvement part of everyday work, led by the people who understand the operation best.

That is the thinking behind the Fractional CI and Operational Excellence model.

Rather than building a full permanent department from the outset, a fractional arrangement provides access to Master Black Belt-level leadership for an agreed, predictable fee.

Crucially, it pairs external objectivity with structured internal capability building:

1. Training the “Doers”, Not Creating Bystanders

A good fractional leader should not keep knowledge to themselves. A central measure of success is capability transfer: helping the internal team become confident enough to lead improvement work without ongoing dependence on external support.

Through structured Yellow Belt, Green Belt, and practical root-cause problem-solving mentoring (like Global 8D), we train your actual shift supervisors, maintenance leads, and line managers. When frontline personnel learn how to identify waste, map value streams, and eliminate variation, problem-solving becomes an organic part of shift handover—not a special project assigned to a separate department.

2. Specialist Support When It Is Needed

When a process problem proves difficult to resolve—such as unexplained batch variation, a persistent line-balancing bottleneck or high scrap—specialist support can be brought in as needed. This may include advanced methods such as multi-factor Design of Experiments (DOE) or AI-assisted process mapping.

3. A Clear and Planned Handover

A strong continuous improvement partner should help the organisation need less external support over time.

By establishing clear project governance, setting up visual management systems, and mentoring internal process champions, the fractional expert gradually scales their involvement back—transitioning from hands-on line intervention to light-touch executive coaching and quarterly governance audits.

Which Model Fits Your Current Growth Stage?

If you are running a single-site manufacturing plant or a high-velocity distribution centre, ask yourself three pragmatic questions:

1. Would a permanent CI team be proportionate to your current needs and budget?
2. Do your frontline managers have the confidence and skills to investigate root causes, or do they still rely on specialist support?
3. Are recent improvement initiatives producing measurable operational and financial benefits?

If you need stronger governance and specialist problem-solving, but are not yet ready to build a permanent department, a fractional arrangement can provide experienced support while developing capability within your own team.

Would a more flexible approach help you build lasting CI capability?

You can explore our tailored Fractional Continuous Improvement and Operational Excellence Packages, or learn how our Lean Six Sigma and Business Improvement Training can help line managers and supervisors build practical, independent problem-solving skills by following the links below:

Fractional Continuous Improvement & Operational Excellence – Counter Gravity Consulting

Lean Six Sigma Training & Business Improvement | Counter Gravity Consulting

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