How to Document a Toxic Manager: What Actually Counts as Evidence

It is one of the most frequently asked questions, and it is usually badly framed. People ask how to prove their manager is toxic. But "toxic" is not a legal category: no statute defines it, no court pronounces it.

The useful question therefore becomes: how do I build a set of material items describing precisely what happened, in a form someone else — an employee representative, a doctor, a lawyer, an inspector — can actually work with?

In the article that follows, I explore the mental load and self-doubt that build up in these situations. If you recognise yourself in this theme, the tests on the platform help you put figures on what the situation is costing you.

What counts as an item

The categories usually treated as usable in this kind of situation are:

• screenshots of text messages and chat threads;
• copies of emails;
• work documents (minutes, schedules, allocation tables, appraisals, internal notes);
• written statements from colleagues or former colleagues;
• medical certificates;
• and generally any written material that is ideally dated.

That last word is the most important on the list. An undated item loses most of its value, because what has to be shown in these situations is almost never a single event: it is a pattern, and a pattern only reads on a timeline.

What makes an item usable

Four properties. Check them one by one.

1. A date. The day, and ideally the time. An email carries it automatically; a personal note has to carry it explicitly, written at the time, not reconstructed six months later. 2. A context. Where, with whom, in what setting. "Weekly team meeting, four people present" is usable. "In a meeting" is not. 3. Factual content. What was said, in direct quotation where possible; what was done; what was not done. No interpretation in this part. 4. A concrete effect on the work. This is what people most often omit, and it is what separates an annoyance from a professional fact. A project reassigned without explanation, necessary information not passed on before a deadline, exclusion from a meeting the role gives access to, an objective changed after the fact: those are measurable effects on the performance of the work.

An example of a usable note:

12 March, 9:15 — team meeting, 4 people present (A., B., C.). Client project X, which I have led since January, is reassigned to B. without prior notice. When I ask, the answer is "we'll talk about it later". Not raised since. Consequence: I have had no access to the project's shared folder since 13 March.

Four lines. Dated, situated, factual, with a verifiable consequence. No adjectives about the person.

What weakens an item

Adjectives about the person. "He was appalling", "she's manipulative", "he's a tyrant". These describe your appraisal, not a fact. They add nothing for an outside reader and prompt them to wonder whether the rest is equally coloured. Premature labelling. Writing "this is harassment" in your own record does not strengthen the file: it substitutes a conclusion for a description, and that conclusion belongs to a court. A record that describes facts lets the reader draw their own conclusion; a record that concludes gets judged on its conclusion. Late reconstruction. A notebook written as events unfold and an account written in one sitting several months later do not carry the same weight. If you are starting today for older events, the honest solution is to say so: separate what was noted in real time from what is reconstructed from memory. Mixing registers. A document that alternates facts, emotions, hypotheses about the other person's motives and old grievances becomes unreadable. Keep two separate documents: the record of facts, and what you think about it. The second is useful — for you, for a therapist — but it isn't the one you hand over.

Three points that need advice, not an article

Covert recordings. Their admissibility is a technical question that has evolved and depends heavily on the country, the context and the procedure. Do not rely on any article about this, including this one: it is a question for an employment lawyer before you act, not after. Access to company documents. Keeping items you legitimately have access to in the course of your duties, and extracting material in bulk, are not the same register. Here too, the line is checked with a legal professional. Statements from colleagues still employed there. Asking for a written statement from someone still working in the company exposes them. It is their decision, it must be taken with full knowledge of the consequences, and it must never be sought under pressure — including friendly pressure.

A structured record beats an accumulation

Many people accumulate: a folder of screenshots, dozens of forwarded emails, scattered notes. That is better than nothing, and it is hard to use.

What can be handed over is a chronology: one line per fact, in order, each with its date, context, content and effect, with the exhibits numbered alongside. An outside reader — a representative, a lawyer — should be able to grasp its structure in ten minutes.

That is exactly the form ScanMyJob produces: a dated, structured, exportable record of facts that contains no characterisation and asserts nothing on your behalf. The tool does not tell you what you are living through; it puts what you describe in order, so that others can examine it.

Who to approach, and in what order

There is no universal order, but there is a common mistake: starting with HR, with nothing in writing, and telling the story.

Some markers:

• Occupational health. Where such a service exists, it can generally be approached at your own initiative, without going through your line manager and without justifying the request, and the physician is bound by medical confidentiality. They can act on the role itself and raise alerts through their own channels.
• Employee representatives (works council, union representative, designated contact). They know the internal procedures and have alert mechanisms.
• The labour inspectorate or its national equivalent. Usually contactable directly, sometimes anonymously.
• The national equality body, if the facts you describe relate to a protected characteristic (origin, sex, age, health, disability, pregnancy, union activity, and so on).
• An employment lawyer. The only contact who can tell you what your material allows, and what it does not.

What this article does not say

It does not say that what you are experiencing falls under a legal category, and it cannot — in either direction. It describes how to build material items that document observable facts.

That distinction is not a rhetorical precaution. It works in your favour: a factual record is stronger, easier for a third party to read, and far less fragile than an accusation.