Stock & Work-in-Progress Insurance for Electronic Components: A Practical UK Guide

Introduction

If you manufacture, assemble, distribute or repair electronic components, your “product” often exists in several places at once: on shelves, in transit, on benches, on test rigs, or half-built in a jig waiting for the next stage. That creates a simple problem: a single incident (fire, flood, theft, power surge, accidental damage) can wipe out weeks of materials and labour before you’ve invoiced a penny.

That’s where Stock and Work-in-Progress (WIP) insurance comes in. It’s designed to protect the value of your raw materials, components, sub-assemblies and partly-finished goods—plus, in many cases, the cost of labour and overhead you’ve already put into them.

This guide explains how Stock & WIP insurance typically works in the UK, what to watch for in electronics risks, and how to set the right sums insured without paying for cover you don’t need.

What counts as “stock” and “work in progress” in electronics?

Insurers usually split your goods into categories, because the risk and value changes as items move through your business.

• Raw materials and components: ICs, PCBs, connectors, sensors, passives, cables, enclosures, adhesives, coatings, solder, flux.
• Finished stock: boxed products ready for sale, spares, replacement parts, refurbished units.
• Work in progress (WIP): partly assembled boards, units in test, items awaiting programming, calibration, conformal coating, burn-in, or final QA.
• Packaging and labels: sometimes included, sometimes limited.
• Customer goods: items you’re repairing, reworking or holding temporarily (often needs a specific “customers’ goods” section).

For electronics businesses, the key is that WIP is not just “materials”. It can include labour, subcontract work, and a proportion of overhead—but only if the policy wording and your declared values support it.

Why electronics businesses are different (and why insurers care)

Electronic components are compact, high value, and often easy to move. They’re also sensitive to conditions that don’t bother other stock.

Common electronics-specific risk factors include:

• High theft attractiveness: small items (chips, modules, phones, laptops, test equipment) with strong resale value.
• Fire load and smoke damage: plastics, packaging, solvents, lithium batteries and soldering processes can worsen fire severity; smoke contamination can render stock unusable.
• Water and humidity sensitivity: moisture can damage components, corrode contacts, or cause latent defects.
• Electrostatic discharge (ESD): a single uncontrolled discharge can destroy or degrade components.
• Temperature control: some components require controlled storage; overheating can ruin adhesives, batteries or calibration.
• Contamination and handling: dust, oils, flux residues, and poor storage can cause faults.
• Supply chain volatility: long lead times mean a loss event can be hard to replace quickly.

A good policy isn’t just about the headline sum insured—it’s about whether the wording matches how you actually store, handle and process electronics.

What Stock & WIP insurance typically covers

Stock & WIP cover is often arranged under a commercial property or commercial combined policy. Cover can vary by insurer, but commonly includes:

1) Fire, lightning and explosion

Still the biggest cause of catastrophic stock loss. In electronics, smoke and soot can be as damaging as flames.

2) Escape of water

Burst pipes, sprinkler discharge, leaks from adjacent units, or water ingress after storm damage.

3) Storm and flood

Flood is often the tricky one: some policies include it as standard, others restrict it, apply higher excesses, or require a flood assessment.

4) Theft (following forcible and violent entry)

Many policies require evidence of forced entry/exit. Theft cover can be limited by:

• security requirements (alarms, locks, shutters)
• time conditions (alarm set outside business hours)
• “safe” or “locked room” warranties for high-value items

5) Accidental damage (optional)

This can be valuable if you have frequent handling, movement between benches, or storage in racking. It may help for incidents like dropping trays of components or forklift impacts.

6) Damage during internal movement (sometimes)

Some policies treat movement within the premises as part of stock cover; others expect separate “goods in transit” cover once items leave a defined area.

7) Deterioration of stock (optional)

More common for food, but can apply where electronics stock relies on temperature control (e.g., certain batteries, adhesives, or sensitive materials). Usually tied to breakdown of refrigeration or temperature control equipment.

What’s often excluded (and catches electronics firms out)

Exclusions and conditions matter as much as cover.

Common issues include:

• Unexplained disappearance: stock “going missing” without signs of forced entry may not be covered.
• Theft by employees: often excluded unless “fidelity guarantee” or employee dishonesty cover is added.
• Wear and tear / gradual deterioration: corrosion, oxidation, humidity damage over time.
• Faulty workmanship / defective design: if the loss is due to poor process control.
• Electrical or mechanical breakdown: damage to equipment is separate; stock damage may be limited unless caused by an insured peril.
• Cyber events: if stock loss is linked to cyber (e.g., ransomware stops production), that’s usually a business interruption/cyber policy issue.
• Pollution/contamination wording: smoke contamination may be covered, but some wordings restrict “contamination” unless caused by an insured peril.
• ESD and latent defects: ESD damage can be hard to prove and may be treated as a process issue rather than an insured peril.

The goal is to align cover with realistic loss scenarios: fire/smoke, water, theft, and accidental damage are usually the core.

How WIP is valued: materials vs labour vs overhead

This is where many claims go wrong.

Stock valuation basics

Most policies cover stock at one of these bases:

• Cost price: what you paid for components/materials.
• Cost of manufacture: materials plus direct labour and sometimes a portion of overhead.
• Selling price: less common; sometimes used for finished goods, often with conditions.

WIP valuation

For WIP, insurers typically expect:

• Materials used to date
• Direct labour incurred to date
• A proportion of overhead (sometimes allowed, sometimes restricted)

If you only insure “cost of materials”, you may get paid for the parts but not the time already spent assembling, programming, testing, coating, or calibrating.

Practical tip: map your production stages and estimate the average “value added” sitting on the floor at any time. In electronics, WIP can be significant if you have long test cycles or batch processes.

Setting the right sum insured (without guessing)

Underinsurance is a common problem, especially with volatile component prices.

Step 1: Identify peak stock periods

Ask:

• When do you hold the most components? (pre-build, pre-Christmas, before a large shipment)
• Do you buy in bulk to manage lead times?
• Do you hold consignment stock?

If your sum insured is based on an “average month” but you have a peak period, you can be underinsured when a loss hits.

Step 2: Separate stock categories

It’s often clearer to split:

• raw materials/components
• finished stock
• WIP
• customers’ goods

This helps avoid one category quietly consuming the entire limit.

Step 3: Consider price spikes and long lead times

If a component doubles in price or becomes scarce, replacement cost can be far higher than your last invoice price. Some policies allow for inflation protection or stock declaration arrangements.

Step 4: Choose the right stock mechanism

Common approaches include:

• Fixed sum insured: simple, but risky if stock fluctuates.
• Day One basis: allows an uplift (often 15–30%) to reduce underinsurance risk.
• Stock declaration policy: you declare stock values periodically (often monthly) and premium adjusts. Useful for businesses with big swings.

Single location vs multiple sites, and storage outside your premises

Electronics businesses often store stock in more than one place.

Check whether your cover includes:

• multiple premises (named locations)
• storage in containers (often restricted)
• temporary storage (e.g., overflow warehouse)
• third-party logistics (3PL) warehouses
• exhibitions and trade shows (special cover)

If you use a 3PL, you’ll want clarity on who is responsible for insurance: you, the warehouse, or both.

Goods in transit: the missing link

Stock & WIP cover usually applies at insured premises. Once goods move, you may need goods in transit cover.

For electronics, transit risks include:

• theft from vehicles
• misdelivery
• damage in handling
• temperature exposure

If you ship internationally, consider whether you need cover for air/sea freight and whether Incoterms place the risk on you at different points.

Security, ESD controls and risk management that can reduce premiums

Insurers price risk based on loss likelihood and loss size. Simple improvements can help.

Physical security

• Monitored intruder alarm with police response (where available)
• Access control and visitor logs
• CCTV covering entrances, loading bays and stock rooms
• Secure cages or locked rooms for high-value components
• Robust locks and shutters

Fire protection

• Good housekeeping (reduce packaging build-up)
• PAT testing and electrical maintenance
• Hot works controls (soldering areas, rework stations)
• Fire doors and compartmentation
• Appropriate extinguishers and staff training

Environmental controls

• Humidity monitoring where needed
• Proper storage for moisture-sensitive devices (MSDs)
• Anti-static flooring and ESD benches
• ESD training and audits

Stock control

• Regular cycle counts
• Segregation of high-value items
• Serial number tracking where possible

These measures don’t just reduce premium—they reduce the chance of a disputed claim.

Claims: what insurers will ask for

If you suffer a loss, insurers typically want:

• inventory records (stock lists, ERP reports)
• purchase invoices and supplier statements
• production records (WIP stage, labour logs)
• photos, CCTV, alarm reports
• evidence of forced entry (for theft)
• salvage details (what can be cleaned, tested, reworked)

For electronics, salvage can be complex. Smoke-affected stock may look fine but fail later. It can help to have a documented test and QA process to support decisions on write-offs.

Common mistakes to avoid

• Insuring only raw materials and forgetting labour in WIP
• Using average stock values instead of peak values
• Not listing all storage locations
• Assuming theft is covered without meeting security conditions
• No goods-in-transit cover for high-value shipments
• Not separating customers’ goods from your own stock

Who should consider Stock & WIP insurance?

This cover is relevant if you:

• manufacture or assemble electronics (OEM/ODM)
• distribute components or modules
• run a repair/refurb business
• hold high-value spares
• have long lead times and batch production

Even small firms can have large exposure: a few reels of chips, a run of PCBs, or a batch in burn-in can represent tens of thousands of pounds.

How to choose the right policy structure

Most electronics firms arrange Stock & WIP as part of a wider package:

• Commercial combined (property + liability + interruption)
• Property owners/tenants cover (buildings/contents + stock)
• Business interruption (to protect cashflow after a loss)

The right structure depends on whether you own the building, your turnover, and how quickly you could restart after a major incident.

Quick checklist before you request a quote

• Peak stock value (by category)
• Maximum WIP value and how you calculate it
• Locations where stock is stored (including offsite)
• Security measures and alarm details
• Fire protection and housekeeping
• Any previous losses or near misses
• Transit needs (UK only vs international)

Call to action

If you’d like a quick sense-check of your stock and WIP values—or you want to make sure your cover includes labour, overhead and the right theft conditions—Insure24 can help you compare options and set the sums insured properly.

Speak to our team for a practical review and a quote tailored to electronics risks. Call 0330 127 2333 or visit insure24.co.uk to get started.

FAQs

What’s the difference between stock insurance and WIP insurance?

Stock insurance covers raw materials and finished goods held for sale. WIP insurance focuses on partly-finished goods and can include materials plus labour and overhead already invested.

Does Stock & WIP insurance cover ESD damage?

Not usually as a standalone event. ESD is often treated as a process/handling issue unless it results from an insured peril (for example, fire or certain types of accidental damage). Always check the wording.

Is theft covered if there’s no sign of forced entry?

Many policies require forcible and violent entry/exit. If stock disappears without evidence, it may be excluded as “unexplained disappearance”.

Can I insure stock at selling price?

Sometimes, but it depends on the insurer and the type of goods. Many policies cover at cost or cost of manufacture. Selling price cover may come with stricter conditions.

Do I need separate cover for goods in transit?

Often yes. Stock cover is usually limited to insured premises. If you ship components or finished goods, goods-in-transit cover can protect you against theft and damage while moving.

What happens if I’m underinsured?

If your declared sum insured is too low, insurers may apply “average” and reduce the claim payment proportionally. That’s why peak values and the right valuation basis matter.

How do stock declaration policies work?

You declare stock values regularly (often monthly). Premium is adjusted based on declared values, which can be cost-effective if your stock levels fluctuate.

Does this cover customers’ goods I’m repairing?

Not automatically. You may need a specific “customers’ goods” section or extension. Make sure it matches the maximum value you hold at any time.