Semiconductor manufacturing and outsourced semiconductor assembly and test (OSAT) operations sit at the intersection of high-value processes, complex supply chains, and demanding customer contracts. The insurance exposures that come with that position are specific and, in some cases, quite different from those of a general manufacturer.
This post sets out the key insurance exposures for Singapore semiconductor manufacturers and OSAT firms, why standard product liability cover is often insufficient, and what a more complete programme looks like.
The core exposure: specification failure and yield shortfall
In most manufacturing sectors, the primary insurance risk is physical — a product that breaks, burns, or injures. Product liability insurance is designed for that scenario.
In semiconductor manufacturing and OSAT, the more common and often more costly risk is financial. A wafer batch that passes visual inspection but fails electrical parametric testing at the customer’s facility. A substrate that meets dimensional tolerances but causes yield degradation in the customer’s bonding process. A packaged device that tests within specification but fails in-circuit at the OEM’s board-level assembly.
None of these scenarios involves physical injury or property damage in the conventional sense. All of them can result in substantial financial claims from the customer: scrapped product, line stoppages, requalification costs, expediting charges, and in some cases contractual penalties for delivery failures.
These are E&O claims, not product liability claims.
Why product liability insurance does not respond
Product liability insurance covers the legal liability an insured faces when their product causes bodily injury or property damage to a third party. The insuring clause is typically limited to these physical outcomes.
Pure economic loss — the financial loss a customer suffers when a product fails to perform to specification, without causing physical harm — is generally excluded from product liability policies. Some policies extend to include “property damage” caused by the defective product in a way that might capture some downstream losses, but the exclusion for the defective product itself (and its immediate consequences) typically applies.
For semiconductor manufacturers and OSAT firms, where the most significant claims tend to arise from process or specification failures rather than physical injury, relying solely on product liability cover leaves a material gap.
Manufacturer’s errors and omissions insurance
Manufacturer’s errors and omissions (E&O) insurance is designed to cover financial losses suffered by a customer as a result of a failure in the manufacturer’s product performance, process, or specification compliance.
For semiconductor manufacturers and OSAT firms, the relevant scenarios include the following.
Wafer fabrication failures: a process deviation or contamination event that results in a batch failing at electrical sort, causing the customer to scrap product and restart the process.
Packaging and test failures: an OSAT process error that results in devices that pass outgoing test but fail at the customer’s incoming inspection or board-level assembly.
Specification non-conformance: a component that meets the manufacturer’s outgoing specification but does not meet the customer’s agreed incoming specification, causing a rejection and requalification event.
Documentation and certification errors: incorrect or incomplete test data, certificates of conformance, or failure analysis reports that delay the customer’s production release.
The E&O policy responds to the customer’s financial loss arising from these events — subject to the policy terms, conditions, and limits.
Other components of a complete programme
Beyond E&O and product liability, a semiconductor manufacturer or OSAT firm operating in Singapore should consider the following.
Industrial All Risk (IAR) insurance covers physical damage to plant, equipment, and inventory — including clean-room equipment, wafer handling systems, and work in progress. For operations with high-value equipment and significant inventory values, IAR is a core component of the programme.
Work Injury Compensation (WIC) insurance is mandatory for production workers under WICA. Semiconductor fabs and OSAT facilities employ significant numbers of production operators, technicians, and process engineers, many of whom will fall within the mandatory WIC categories.
Cyber insurance is increasingly relevant for semiconductor operations, where manufacturing execution systems (MES), process control networks, and intellectual property represent significant cyber exposures.
You can read more about our E&O and product liability cover and product liability cover on the products page.
If you are a Singapore semiconductor manufacturer, OSAT firm, equipment maker, or process materials supplier and would like to understand how your current insurance programme addresses your specific supply chain liability exposure, we would be glad to work through it with you. Contact TZY CO to arrange a programme review.
Frequently asked questions
What insurance does a semiconductor or OSAT manufacturer in Singapore need?
A semiconductor fabrication or outsourced semiconductor assembly and test (OSAT) operation typically requires a layered insurance programme covering several distinct exposures. Product liability insurance covers bodily injury or property damage caused by a defective product reaching the end user. Manufacturer’s errors and omissions (E&O) insurance covers financial losses caused by a specification failure, performance shortfall, or process error — for example, a wafer batch that passes visual inspection but fails electrical testing at the customer’s facility. Industrial All Risk (IAR) insurance covers physical damage to plant, equipment, and inventory. Employers should also maintain Work Injury Compensation (WIC) insurance for production workers. For operations with clean-room or proprietary process exposure, business interruption cover should be assessed separately.
Why is standard product liability insurance insufficient for semiconductor supply chains?
Standard product liability policies are triggered by bodily injury or tangible property damage. In semiconductor supply chains, the most common and costly claims do not involve physical injury — they involve financial losses from specification failures, yield shortfalls, delivery delays, or process non-conformances that cause downstream production disruption at a customer’s fab or assembly facility. These losses — line stoppages, requalification costs, contractual penalties, expedite charges — fall outside the scope of most product liability wordings. Manufacturer’s E&O insurance is specifically designed to respond to these financial loss scenarios, and is increasingly required by tier-one customers and OEM supply agreements.
This article provides general information only. It is not insurance advice. Semiconductor and OSAT supply chain contracts vary significantly in their terms and the insurance requirements they impose. Policy availability, terms, conditions, and exclusions vary by insurer and product, and cover is subject to the full policy wording. Please contact TZY CO for advice on your specific situation.