An impact on what? Most desk jockey labor hasn't been optimizing for efficiency for decades. I'd say the amount of "work" will simply go up by 25%, and the position of the human-based processing nodes will shift a little bit. But it's a Schelling point attractor that mutually-antagonistic companies will be pushed into adopting. You certainly won't want to hire 25% more human employees at your own company to handle your counterparties' increased paperwork generation from their use of AI.