Am I Being Exploited? (Need Advice on Shared Resource Setup)

So I transferred to this office last year. They hired me specifically as a writer, and everything was clear at the start. But after a few months, our team was suddenly informed that we would now be a shared resource of our one-up organization (which is unusual because we are actually part of a one-down organization).

What this means is: - We now handle more projects than before. - We now report to more bosses (our team originally had 3 direct bosses, but now we are also under the organization above us). - Despite the additional workload and responsibilities, our salary remains the same. - There’s no official document outlining this change or explaining our new role. - Even in the Talent Org Chart (TO), our placement isn’t clearly mapped out—it seems like this is just an internal setup with no proper structure.

I’m starting to feel like this setup is unfair. Is this even legal? Should I start looking for other jobs? It feels like we’re being exploited, both in terms of compensation and workload. Would appreciate any advice.

Thanks!