The record you should not be creating

The premise of contractor status is that you do not control how the work is done. Filing a conduct write-up, setting mandatory availability or putting somebody on a rota says the opposite — in your own system, with a date on it. Most software will let you, and the record it leaves is the record used against you.

Writing up a contractor for conduct is declined with the reason and an alternative: raise it against the engagement — a breach, a remedy, a deadline, or a decision not to renew. A greyed-out button teaches nobody; a sentence explaining the distinction is the useful thing.

Arrangements vary and we are not your lawyer. Every refusal can be overridden with a written reason, which is kept along with the refusal it overrode — so a deliberate decision looks like one, rather than looking like nobody noticed.

Ending an engagement is fine for anyone; revoking a login proves nothing, and it is "dismissed for cause" that does the damage. Mandatory safety and licensing training stays allowed for everybody on site — that is control of the place, not of the method.