With his constant tardiness and rude behavior, he was deemed unemployable by any company.

unemployable 是由前缀 un-（表示"不、非"）和 employable（可雇佣的）组成的形容词。employable 来自动词 employ（雇佣）加上后缀 -able（表示"能够...的"）。unemployable 整体意思是"不适合被雇佣的"。