Case Study (Bid Evidence)

In European public procurement evaluation, assertions without evidence score poorly. A case study is the primary vehicle for converting a supplier's claimed experience into scored proof. It tells the story of a past contract in a structured way that allows evaluators to assess relevance, scale, and delivery quality, and to verify the claims made elsewhere in the technical proposal.

What is a case study in a bid context?

A bid case study is a concise, structured account of a past contract that demonstrates the supplier's relevant capability. It is not a marketing testimonial or a general capability statement. It is evidence, and it is evaluated as such.

A high-scoring bid case study typically covers:

Client and context. The name of the contracting authority or client (public or private), the sector, and the geographic location. Naming the client signals that the evidence is verifiable. Anonymous case studies ("a major European utility") score less well because evaluators cannot assess credibility or request a reference.

Contract scope and scale. What was delivered, its value, duration, and the number of people or assets involved. Scale comparability matters: a case study from a contract ten times smaller than the one being bid may not be accepted as relevant evidence.

The supplier's specific role. In a consortium or multi-supplier framework, what did this supplier actually do? Claiming credit for a joint delivery without specifying the individual contribution is a scoring risk.

Measurable outcomes. Quantified results are far stronger than qualitative claims. Delivery against programme, cost performance, user satisfaction scores, safety record, environmental metrics, or any other outcome the buyer values in the award criteria.

Challenges and how they were managed. Evaluators respond positively to honest accounts of difficulties encountered and how they were resolved. This demonstrates maturity and risk management capability, not weakness.

Contracting authorities in EU procurement exercises may ask for case studies in a specified format (word limits, headings, client contact details for reference checks). Compliance with these format requirements is mandatory, not optional.

Why case studies matter for bidders

Case studies are often the only opportunity in a tender response to demonstrate that claims about delivery capability are grounded in actual experience rather than aspiration. A method statement describes the approach; a case study proves it has been done before. Together they provide the most credible quality narrative available to a supplier.

Maintaining an up-to-date bid library of case studies, organised by sector, service type, contract value, and geographic location, is one of the highest-value investments a European public sector supplier can make. A library of 20 well-maintained case studies covering the supplier's core service lines supports faster, higher-quality responses across every procurement exercise.

Example

A Romanian IT services firm is bidding for a digitisation project at a Bulgarian government ministry. The award criteria require two case studies of comparable projects. The firm submits a case study from a Romanian tax authority document management project (similar scope, comparable value, public sector) and a second from a Croatian customs digitisation project (similar technology, slightly larger scale). Both include named client contacts and quantified outcomes: the first achieved a 94% reduction in manual processing time; the second was delivered two months ahead of programme. The case study section scores full marks.

Frequently Asked Questions

How old can a case study be?

Most contracting authorities specify a recency window, typically three to five years from contract completion or current delivery date. Older case studies may be accepted if they are the only comparable examples available, but recent evidence of current capability is preferred. Always check the specification: some buyers explicitly require delivery within a stated period.

What if we do not have directly comparable experience?

Use the closest available evidence and explain the transferability clearly. If a directly comparable contract does not exist, a case study from a related sector, a smaller scale, or a comparable technical challenge with a clear explanation of the skill transfer is stronger than leaving the question unanswered. Some buyers allow a named subcontractor or consortium partner's experience to count, provided the arrangement is explicit.

Do buyers actually check case study references?

Yes. Contracting authorities may contact the named clients before or after shortlisting. References should be agreed in advance with the client named, and the contact details should be current. An unanswered or negative reference can overturn a high evaluation score.