noun
person who has left a job; former employee; unemployed person
Refers to someone who has resigned, retired, or been laid off. Often used in economic or labor contexts.
離職者の再就職支援が重要だ。
Support for re-employment of people who have left their jobs is important.
彼は離職者としてハローワークに通っている。
As an unemployed person, he goes to Hello Work.
失業者 means 'unemployed person' and emphasizes the state of being without work and seeking employment, whereas 離職者 focuses on the fact of having left a previous job, regardless of current employment status.
Compound of 離職 (りしょく, 'leaving a job') + 者 (しゃ, 'person').