The question of how the skills and knowledge of the adult language, literacy and numeracy workforce can be improved is particularly relevant in view of the ongoing debate on how language, literacy and numeracy skills should be taught. This study reflects on the professional development needs of the three sectors--vocational trainers, specialist teachers and volunteer tutors-- of the Australian English language, literacy and numeracy workforce. Important issues affecting the workforce include entry pathways, attitudes, responsibilities and barriers to gaining professional development. Preferred modes of professional development delivery along with skill gaps among the workforce are identified to provide guidance for future workforce development planning.