I'm applying after already finishing my MA a few years ago, and am trying to figure out the best approach for letters of rec. I was hoping some of you might have ideas about the questions below!

When academic letters of recommendation are preferred, is there any preference for undergraduate vs. graduate recommenders? Obviously my grad school professors have more recent memories of me, but I finished my grad course work 4 years ago, so it isn't all that recent either.

Since my undergrad professors previously recommended me for grad school, would it be absolutely crazy to ask them to submit and/or adapt the existing letters for law school?

Will it reflect badly if I don't submit an employer recommendation, after having been in the workforce for a few years? I'm certain they'd write me a good letter, but I'm not feeling comfortable disclosing quite yet that I'm applying to law school, since I wouldn't be matriculating for over a year at this point.

Thanks, all!