After his graduation from the Taiwan Provincial College of Education in Changhua, Lin was invited to be a part-time teacher in mechanical drawing at a rehabilitation class in September 1975.
林東安是彰化教育學院畢業的，本來在私立龍華工專教書，民國六十四年九月，復健班創設，林東安應邀到復健班兼幾堂課，教機械製圖。