Sadly, I figured I would have a few kindred over-admined people out there.
I'm trying to practice saying no. Its difficult.
Are you all new-ish hires as well? I wonder if this is hitting us particularly hard because of that...
I think you need to go to your head of department and discuss reallocation of part of your admin load to others. The usual rule is to give lecturers/assistant profs fairly minimal admin loads to let them build their research profile. But I have heard of lecturers in the UK complaining about high admin loads...
I went to my HoD 3-4 times in one year with no results (s/he is incompetent, but really nice).
Some departments at my Uni are good about lecturers, others aren't. My department is full of research stars so the lecturers pick up the admin slack.