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Ghost-Posted Influencer Content: Who's Actually Responsible for Disclosure When an Agency Writes the Captions
Guide
Influencer Marketing Basics
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The disclosure duty under Markedsføringsloven § 6(4) is tied to the commercial relationship — whether a benefit was received in exchange for a mention, and who commissioned the promotion — not to who physically typed the caption. Whether a creator writes their own caption, gets help from a social media manager, or has outsourced posting entirely to an agency, the same duty applies, and both the creator and the brand can be held responsible. This article covers what ghost-posting actually covers, and how to reduce the risk regardless of who types the words.
The disclosure duty under Markedsføringsloven § 6(4) is tied to the commercial relationship — whether a benefit was received in exchange for a mention, and who commissioned the promotion — not to who physically typed the caption. See influencer marketing disclosure rules in Denmark and the EU for the full underlying rule. Whether a creator writes their own caption, gets help from a social media manager, or has outsourced posting entirely to an agency, the same duty applies — and, as that article already establishes, both the creator and the brand can be held responsible.
This article applies that existing, already-sourced rule to one specific practical scenario — it isn't a new legal finding about ghost-posting itself. No source found in this research describes a standalone liability position for a third party who only handles the posting mechanics; the answer follows from how the disclosure duty is already built, around the commercial relationship, not authorship.
The term typically covers three distinct setups:
The further down that list a setup sits, the higher the practical risk of a disclosure mistake — fewer eyes see the post before it's public.
Forbrugerombudsmanden's own guidance, covered in full in influencer marketing disclosure rules in Denmark and the EU, already answers the underlying question: "Both can be held responsible. If the influencer operates as a business, they're independently responsible for their own marketing, and the brand can simultaneously be responsible as the party that commissioned the advertising." An agency or social media manager who writes the caption isn't itself a party to the underlying commercial deal between creator and brand — so it doesn't automatically become a third, independently liable party under the law. But the mistake — a caption published without correct disclosure — still lands on the two parties who are actually responsible, regardless of who wrote it.
In practice, "the agency wrote it" isn't a defence for either the creator or the brand. Responsibility follows the relationship (benefit plus commissioning), not the pen.
| Setup | Who should ensure correct disclosure | The typical failure point |
|---|---|---|
| Creator writes and posts the caption themselves | The creator, working from the brand's brief | The creator forgets or downplays the disclosure |
| Agency/social media manager drafts it, creator approves before posting | Both — the agency at drafting, the creator at approval | Approval happens fast, without a specific disclosure check |
| Agency runs the account near-autonomously | The creator and the brand — the agency executes, but doesn't independently carry the legal responsibility | Neither actually-responsible party sees the post before it's live |
This section is Make Influence's own operational view, not a legal conclusion.
Even when the disclosure duty is fully met, ghost-posting raises a separate, commercial question: many brands specifically pay for a creator's own voice and perspective, not just a placement. If the caption is genuinely written by an agency with no input from the creator, the content can lose exactly the authenticity the collaboration was bought for. That isn't a legal breach — it's a quality and trust risk worth addressing directly in the brief. See what to put in an influencer contract for where approval and revision rights typically belong in the agreement.
IF the creator writes and posts their own caption → disclosure is the creator's responsibility; make sure the exact wording is in the brief.
IF a social media manager or agency drafts the caption but the creator approves before posting → build a specific check into that approval: "is the disclosure there, and does it come first?"
IF the agency posts near-autonomously with no prior creator approval → agree in writing up front that the fixed disclosure wording is always inserted automatically, and that the creator spot-checks posts on a regular basis.
IF, as a brand, you're working with a creator you know is represented by an agency → see negotiating with an influencer's manager or agency for how that third party changes the rest of the deal — disclosure is one of several things that shifts.
Write the exact disclosure wording into the brief itself — not just the requirement to disclose — as already recommended in influencer marketing disclosure rules in Denmark and the EU. When a third party is involved in writing or posting the caption, that matters even more: make sure the wording reaches the agency or social media manager, not just the creator, and that the pre-collaboration expectations conversation — see setting expectations before an influencer collaboration — explicitly covers who has final eyes on the post before it goes live.
In our experience, most disclosure mistakes in this kind of setup aren't a deliberate attempt to hide anything — they happen because the required wording never reached whoever actually pressed "publish."
This research found no source describing a standalone, statutory liability position for an agency that only handles posting on a creator's behalf. Responsibility follows the commercial relationship — the creator and the brand — as established in the general rule.
No. The tool is a technical mechanism for publishing the content — it doesn't change who carries legal responsibility for disclosure.
No. The disclosure needs to identify the commercial intent and typically the brand ("ad for [company]") — not which agency handled the posting work.
No, they're two different questions. Negotiating through a manager is about the deal process and price — see negotiating with an influencer's manager or agency. This article covers specifically who's responsible for correct disclosure when a third party handles the caption or the posting itself.
That raises the practical risk of a disclosure mistake, but it doesn't change legal responsibility — the creator (as a business) and the brand remain the responsible parties. The practical fix is building an approval step into the process, not shifting responsibility.
Yes. Whoever is responsible for disclosure on the sponsored post is equally responsible if the same commercial benefit resurfaces in content designed to look independent or unprompted — a review portal, a later "personal favourite" post reusing the same affiliate link, or a claim of independent testing that didn't happen. See when is an "organic" review actually hidden advertising under Danish law? for two Forbrugerombudsmanden rulings on exactly that pattern.
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