Yeah, Papyrus office has been made for MOS (previous versions got high praise on OS/2) but they're holding it back until MOS 1.5 gets released (may be a while yet, as it's a major overhaul).
While some people have mooted OpenOffice to be ported over, nobody seems to be doing it. There's older Amiga programs that do most things that are needed from an Office suite, but you have to be willing to dig for it.