This note fills two gaps in the Construction, Machinery And Bond chapter. Insurance bonds are guarantees an insurer gives to a beneficiary, usually a project owner or a government body, that the principal will meet its obligations: tender, performance, advance payment, retention, maintenance, payment and customs bonds, and the Work Permit security bond. Contractors' plant and machinery (CPM) insurance covers the cranes, excavators and other equipment that CAR policies leave out. The exam tests the three-party structure, on-demand versus conditional bonds, the Singapore rules on restraining bond calls, bond arithmetic, and the scope, exclusions and settlement of plant cover.
5 sections·~4 min read
✓Checked against the SCI ComGI syllabus chapter 7 and product list (Insurance Bonds); BS Mount Sophia Pte Ltd v Join-Aim Pte Ltd [2012] SGCA 28; CKR Contract Services Pte Ltd v Asplenium Land Pte Ltd [2015] SGCA 24; MOM security bond requirements; standard surety and CPM wordings, checked 13 Sep 2026. Unofficial prep, not endorsed by MAS or SCI.
★
Must-know for the exam
✓A bond has three parties: principal (whose obligation is guaranteed), beneficiary or obligee (who can call), surety or guarantor (the insurer or bank).
✓The surety expects to be repaid: it takes a counter-indemnity from the principal (often with directors' guarantees or collateral) and underwrites like a lender.
✓Liability is capped at the bond amount and ends at expiry or on release by the beneficiary; demands must comply strictly with the bond's terms.
✓On-demand bonds pay against a compliant demand without proof of default; conditional bonds need proof of default and loss.
✓Singapore courts restrain a call on a performance bond only for fraud or unconscionability, on a strong prima facie case (BS Mount Sophia v Join-Aim [2012] SGCA 28).
✓A contract clause limiting injunctions to fraud only is enforceable (CKR v Asplenium [2015] SGCA 24).
✓Bond types: tender (bid), performance, advance payment (reducing as the advance is recovered), retention (in lieu of cash retention), maintenance (defects period), payment, customs.
✓MOM Work Permit security bond (as at 13 Sep 2026): $5,000 per non-Malaysian worker, banker's or insurance guarantee naming MOM as beneficiary.
✓CPM covers owned and hired-in construction plant against accidental external damage; mechanical and electrical breakdown, wear and tear, tyres (unless the plant is damaged too) and uncovered transit or waterborne use are common exclusions.
✓CPM sums insured should be new replacement value to avoid average; total losses may be settled net of capped depreciation; theft often carries a percentage excess.
How a bond differs from insurance
•In ordinary insurance the insurer pools premiums and keeps the losses. In a bond the surety lends its financial standing to the principal. If the beneficiary calls, the surety pays, then recovers from the principal under the counter-indemnity. The premium is closer to a credit fee.
•So bond underwriting looks at the principal's capital, capacity (work in hand, project size against turnover) and character (track record), and may require collateral. A contractor with $10 million turnover bidding for a $25 million job raises a capacity question, not a fire protection question.
•Trap: telling a contractor that a bond protects it from the cost of its own default. It does not; it only lets it provide security without tying up cash.
•Takeaway: bond = guarantee for the beneficiary, debt for the principal.
The main bond types
•Tender (bid) bond: the bidder will not withdraw during the validity period and will sign and provide a performance bond. Example: 2% of a $4,500,000 tender = $90,000.
•Performance bond: secures completion. Example: 10% of $8,000,000 = $800,000; the owner's extra cost of $1,300,000 is recoverable from the bond only up to $800,000.
•Advance payment bond: secures repayment of the unrecovered advance and reduces as it is recovered. Example: $1,000,000 advance recovered at 20% of progress payments; after $1,500,000 certified, bond = $700,000.
•Retention bond: replaces cash retention. Example: 5% of $6,000,000 = $300,000, often halved at practical completion.
•Maintenance bond: secures defects rectification after completion, usually smaller than the performance bond.
CMFASPrep