Charlotte Hayes
Contracts & Cost Specialist
Charlotte is a contracts and cost specialist at CALIM, covering cost advisory, margin and revenue recovery, commercial data governance, and cost-side contract analytics for construction and EPC contractors. Her insights are reviewed by CALIM's senior leadership before publication.
Areas of Expertise
Articles by Charlotte
11 articles published
Can You Claim Loss of Profit and Overheads on Omitted Work?
When an employer omits scope by variation, you lose the revenue - and the profit and overhead contribution baked into it...
Which Preliminaries and Time-Related Overheads Can You Recover?
A prolongation claim lives or dies on preliminaries, yet many contractors claim the wrong ones and lose the lot. Not eve...
Pay-When-Paid and Pay-If-Paid Clauses in Construction Subcontracts
A conditional payment clause can look harmless in a subcontract until the day the employer stops paying. Then it reveals...
How to Calculate Prolongation Costs: Hudson, Emden and the Actual-Cost Approach
Winning the extension of time is only half the battle. The other half is proving what the delay actually cost you, and t...
Retention: How Holdback Works and How to Actually Get It Back
Retention is the money you earned, the employer kept, and nobody chased. The retention release mechanism under FIDIC is ...
Interim Payment Certificates Explained: The Monthly Valuation Cycle Every Contractor Should Master
The interim payment certificate is the single most important document in a contractor's monthly cash flow cycle. Yet mos...
The True Cost of an In-House QS/Commercial Team vs an Outsourced Contract BPO
Most contractors calculate the cost of their commercial team by adding up salaries. That is the wrong number. The fully-...
Confidentiality in Contract Advisory: Why Your Data Is Safer with an External Specialist
Contractors guard their contractual data fiercely - and they should. But the real question is not whether an external ad...
The Revenue You Do Not Know You Are Losing: Why 'No Challenges' Is the Most Expensive Assumption
When a contractor says they have no challenges, it usually means they have not looked. Invisible revenue leakage - uncap...
Your Contract Is a Meter. Are You Reading It?
Most SME contractors blame the project when margins go missing. Wrong place to look. In most engagements we take on, the...
Enterprise-Level Contract Expertise Without the Enterprise Headcount
A senior contracts manager in the GCC costs around QAR 45,000 a month. Plus benefits. Plus six months to find one. Plus ...
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