I've started delegating my work to my coworkers in the office.
(Just a coincidence, I'm sure: there are no other women in my office. The only other women in the company also work in admin. Just a coincidence, I'm sure.)
Also, my boss is taking projects away from me.
"Your time is more valuable than that," he told me.
My initial response was to blame myself, to feel like I was doing a bad job, but then I remembered that I don't want to be doing the job that I'm doing. And now I have time to do the shit I'm good at.
My workload doesn't affect my pay, but the quality of the work increases my value.