彼女は働きづめだ。

she; her; her; girlfriend; sweetheart

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

to work; to labor; to labour; to function; to operate; to be effective; to work (i.e. ... works); to come into play; to commit (e.g. a crime); to perpetrate; to do; to act; to practise; to practice; to be conjugated

stuffing; packing; end (esp. the foot of a bridge); lowest-ranking guest at tea ceremony; tea master; endgame (esp. in shogi or used figuratively); sweet eel sauce; middle-aged woman; appointment to a particular workplace; using as the sole ground of judgement (judgment); continuing; keep doing for period of time

be; is; indicates past or completed action; indicates light imperative