So how do we deal with Essential Workers who live in one DHB area and are required for work in another?
Make them stay in their work area if they're that essential.
I partially jest, however I live in the Wairarapa but work in Manawatu. Normally I stay in the Manawatu during the week, and go home each weekend. I haven't been home for 3 weeks now, with at least another two still looming. If they lock us to districts, it could be a lot longer before I am able to see my wife / home.