A case study does not die of a refusal.
It dies in a drafts folder, somewhere between your client, their marketing team and their legal counsel, and nobody ever has to say no to you. They say “love it, let me run it past a couple of people,” and that is the last you hear.
So the problem is not persuasion. It is an approval path you cannot see and did not design.
Four things fix most of it. Ask on the day the result lands rather than at renewal. Write the whole thing yourself first, so your client is editing rather than drafting. Find out which of three approval routes you are in, because one of them is fatal and you can work around it. And put one line in the engagement agreement before anybody has anything to lose.
There is also a legal bit that almost nobody writing about this mentions, and I will get to it, because it changes how you write the quote.
Ask on the day
The worst time to ask is at renewal, which is when most people ask, because that is when somebody remembers to.
At renewal your client is in a procurement frame of mind. They are weighing cost, they may be about to negotiate, and endorsing you publicly weakens their position. You have asked for a favor at the moment they are preparing to ask you for a discount.
The right moment is the day the number lands, when the thing worked and your contact is briefly a person who made a good decision. The window is short: in three weeks it is normal, and in three months it is the baseline they are judged against.
Ask then, in the same message as the result. One line, no ceremony: “Can we write this up? I’ll draft it and you can cut whatever you want.”
Write it first
This is the single highest-leverage change and it is purely about effort transfer.
Ask for approval to write a case study and you have given your client a project. They have to decide what it should say, check whether they are allowed, and find the time. Projects get queued.
Send a finished draft and you have given them a two-minute editing task. People do two-minute tasks, and deleting a sentence you dislike is far easier than composing one you like.
Send it as a document they can edit directly, with the numbers already in it and the quote already written. Say plainly that the quote is a suggestion and they should change it into something they would actually say, which is both polite and, as it turns out, legally relevant.
The three approval routes
Find out early which one you are in, because it determines how long this takes and whether it is possible.
Your contact can just say yes. Common in companies under about fifty people, and in that case you are done in a day. Ask directly: “Is this your call, or does it need to go somewhere?”
It goes to their marketing or comms team. Usually survivable and often improves the piece, because they care how the company reads. Expect them to want control of the quote and the logo, and raise the logo usage question before they do.
It goes to legal or procurement. This is the one that kills case studies, and not out of malice. A lawyer reviewing an unsolicited publicity request has no upside and some downside, so the safe answer is no, or no answer. Publicly traded companies have genuine disclosure constraints. Some vendor contracts contain a blanket confidentiality clause that forbids naming the relationship at all, and your contact may not know it is there.
If you land in route three, stop pushing the named version and go straight to the anonymized one. You will get it approved in a week instead of never.
When you cannot use the name or the numbers
Here is the thing most people get wrong about anonymized case studies: they think the name is the valuable part. It usually is not.
A prospect is reading for whether their situation is in there. “A 40-person logistics company in the Midwest” does that work. The logo was never carrying the argument.
What you cannot lose is specificity about the mechanism. Keep the situation, the constraint, the sequence of what you did and why, and what changed. Drop the name, round the numbers, change the state if you must.
If exact figures are off the table, use ratios instead. “Cut cost per qualified lead by about a third” survives legal reviews that “from $340 to $220” does not, because the second leaks their economics.
And ask for the thing that is easier to get than any of it: permission to describe the work verbally on calls while the written version stays anonymous. Almost nobody refuses that, and in a sales conversation it does most of the job.
The part the FTC has an opinion about
This surprises people, so it is worth knowing before you publish rather than after.
Case studies with client quotes are endorsements, and the FTC’s endorsement rules in 16 CFR Part 255 apply. Three parts of it bear on how you work.
Quotation marks mean exact words. The rules say an advertisement need not use the endorser’s exact words unless it represents that it is doing so, “such as through the use of quotation marks,” and that an endorsement may not be reworded so as to distort the endorser’s opinion. So drafting a quote, getting a nod and publishing it inside quotes is worth tightening. Have them edit it into their own words, or attribute it without quotation marks.
A discount in exchange for a write-up is a material connection. The rules require disclosure of a connection that might affect the credibility of an endorsement and is not reasonably expected by the audience, and they say that explicitly includes free or discounted products, “regardless of whether the advertiser requires an endorsement in return.” A client being a paying client is expected and needs no disclosure. Knocking 10% off the retainer because they agreed to the case study is a different thing.
Old case studies have an expiry you did not know about. You may run an endorsement only while you have good reason to believe the endorser still holds the view, and the rules expect you to check at reasonable intervals. A 2021 case study whose sponsor left and whose company now uses somebody else is not just stale, it is a claim you can no longer support.
One more if you are an agency: the rules state that advertising agencies and PR firms can be liable for their role in creating or disseminating endorsements lacking necessary disclosures. Not only the client’s problem. I went through the adjacent review rules in what to do about a competitor buying fake reviews.
The line that makes all of this easy
Put it in the engagement agreement, at the start, when the case study is hypothetical and nobody has anything to protect.
Something like: either party may describe the engagement and its results in anonymized form, and named use of the other’s identity or results requires written approval, which will not be unreasonably withheld.
That is not a trick. It commits them to nothing they will regret, and it pre-clears the anonymized version, which is the one you can usually publish. In month zero it takes one email. In month nine it takes a legal review.
Before lunch
Twenty minutes.
Open your last three completed engagements and write one up now, as a finished draft, without asking first. Send it with the line about cutting whatever they want. One of the three comes back approved.
Then open your standard agreement and add the anonymized-use sentence, so that this is the last time you have to do it the hard way.
If you’d like a second pair of eyes on which of your engagements is actually worth writing up, drop me a line on email, WhatsApp, phone or LinkedIn and we can have a quick chat, and my notes on content marketing cover what to do with the thing once it exists. I’m taking on a small number of contracts at the moment, so I’ll tell you straight whether it’s something I could help with.