Field-Based Lean Technique · Ireland & Europe

ChangeYour Site in 5 Days.

Kaizen Events (Kaizen Blitz) are focused 3–5 day workshops that bring your construction team together to eliminate waste, fix broken processes, and implement real improvements — during the event itself, not 6 months later in a report.

Current State Map
Future State Design
Lead Time Analysis
Value-Add Ratio
What One Kaizen Event Delivers
30%

Average Waste Eliminated

Non-value-added activity removed from the targeted process in a single 5-day event

5days

Implementation, Not Planning

Changes go live during the event — real conditions, real site, real results

12×

Average Return on Investment

Documented savings vs. event cost across our client engagements

200+

Events Facilitated

Across healthcare, commercial, industrial, and infrastructure construction

30-day

Follow-Up Audit Included

Every event includes a 30-day audit to verify gains are holding and address any gaps

60–80% of lead time is waste
1–5% Typical value-add ratio
€7B+ Project portfolio
LCI Registered Trainer

What Is a Kaizen Event?

Kaizen Event — also known as a Kaizen BlitzRapid Improvement Event (RIE), or Rapid Improvement Workshop (RIW) — is a focused, team-based improvement sprint. A cross-functional group of 6–12 people works intensively on a single, well-scoped process problem for 3–5 consecutive days.

The critical difference from traditional consulting: changes are implemented during the event itself. Your team isn’t handed a report with recommendations to act on later. By Day 3 or 4, real changes are live on your job site. By Day 5, you have measured results.

Three Types of Construction Kaizen

VSM uses a standardised set of icons to represent every element of the value stream — ensuring that maps are universally readable and comparable across teams, organisations, and projects.

Process Box

Represents a step or operation where work is being performed. Each process box contains a data box below it showing key metrics: cycle time, changeover time, uptime, and number of operators.

Core Element
Push Arrow

Shows that material is being pushed from one process to the next — regardless of whether the downstream process needs it. Push arrows signal a key source of waste and inventory accumulation.

Flow Indicator
Inventory Triangle

Marks a location where inventory accumulates between processes. The amount of inventory is noted below the triangle. Inventory triangles are key waste indicators — every one represents money tied up and time delayed.

Waste Indicator
Kaizen Burst

A starburst symbol placed on the Future State Map to highlight improvement priorities — where kaizen events, SMED, or 6S implementations are needed to move from current to future state.

Improvement Focus
🏭
Supplier / Customer

Factory icons at either end of the map represent the supplier (start of the stream) and the customer (end of the stream). Every VSM begins and ends with the customer's demand — the pull that drives the whole system.

Stream Boundaries
Timeline

A stepped timeline at the bottom of the map shows lead time (waiting) as peaks and process time (value-adding) as troughs. The ratio of process time to lead time gives the Value-Add Ratio — typically 1–5% in construction.

Metric Output
📋
Information Flow

Straight arrows show electronic information flow; curved arrows show manual information flow (drawings, phone calls, meetings). Information flow failures are one of the biggest sources of construction waste.

Information Layer
🛒
Supermarket

Represents a pull system — a controlled, replenishment-based inventory point where downstream processes take what they need, triggering replenishment upstream. Supermarkets replace push scheduling with pull flow.

Pull System

Benefits of Kaizen Events in Construction

Kaizen events offer multiple benefits that extend beyond just process changes. In fact, they have both operational and cultural advantages. Some of the most impactful benefits include:

Lean Touch Solutions kaizen

Rapid Problem-Solving – Teams can quickly address inefficiencies and bottlenecks.

Lean Touch Solutions kaizen

Increased Efficiency – Streamlines workflows by eliminating waste and unnecessary steps

Lean Touch Solutions kaizen

Enhanced Team Collaboration – Builds stronger working relationships and shared ownership of success

Lean Touch Solutions kaizen

Cost Savings – Reduces expenses by minimising rework, material waste, and delays

Lean Touch Solutions kaizen

Improved Quality – Encourages standardisation and best practices that minimise defects

Lean Touch Solutions kaizen

Greater Employee Engagement – Involving frontline workers boosts morale, innovation, and accountability

Book a Kaizen Events Training Course

Give your teams the skills and structure to drive real-time process improvements and build a continuous improvement culture from the ground up.

READY TO SEE THE TRUTH ON SITE?

Book Your Kaizen Events Training Course Today

Tell us the process that’s frustrating your team or eating your margin. We’ll scope a Kaizen Event, define target improvements, and have a team on-site within weeks — not months.

Frequently Asked Questions

Everything you need to know before booking your first Kaizen Event.

A Kaizen event (also called a Rapid Improvement Event or RIE) is a focused, time-boxed improvement sprint — typically 3–5 days — where a cross-functional team analyses a specific process and implements improvements immediately. Kaizen event training teaches participants how to plan, facilitate, and sustain these events, covering everything from scoping and team selection to implementation and follow-up.

A typical 5-day Kaizen event follows a structured format: Day 1 — training, baseline observation, and current state mapping. Day 2 — waste analysis and root cause identification. Day 3 — solution generation and pilot testing. Day 4 — full implementation and standard work creation. Day 5 — documentation, results presentation, and 30/60/90-day sustainability plan.

Well-facilitated Kaizen events typically deliver 30–60% reductions in process cycle time, significant quality improvements, space savings of 20–40%, and measurable cost reductions. Beyond the quantitative results, Kaizen events build team capability, improve morale, and create a proof-of-concept that demonstrates the power of Lean to sceptical stakeholders.

Sustainability requires updated standard work, visual controls, leadership follow-through, and a structured 30/60/90-day review. Training team members to own the new standards, embedding changes into induction processes, and assigning a champion to each improvement action are essential. Kaizen events that lack a sustainability plan revert within weeks — the 5th S (Sustain) must be designed into the event itself.

General Lean training builds conceptual understanding of tools and principles. Kaizen event training is experiential and action-oriented — participants learn by doing, facilitating real events in their own organisation. It develops facilitation, team leadership, and change management skills alongside Lean tool knowledge, making it the most powerful accelerator for embedding a continuous improvement culture.

Related Lean Construction Services

Green Belt works best as part of a comprehensive lean improvement strategy. Explore our related services.

📋
Last Planner® System

Commitment-based weekly planning that complements Takt perfectly

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🚂️
Takt Planning

Zone-based production rhythm that eliminates trade clashes and delays

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🗺
Value Stream Mapping

Visualise and eliminate waste across your full construction delivery process

Learn more →
🟢
Six Sigma Green Belt

Lead data-driven improvement projects with statistical process control

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Kaizen Events

Rapid structured improvement workshops that deliver results in days

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