What is the origin of the phrase 'undertaker'?

well graves are below ground, right. there might also be some connection with the Spanish Word for Labor- Trabajo= which is related to Bajo- below-down ( arriba is up) and thus a labor enterprise- or Undertaking. the Spanish Word for work is almost literally ( Undertaking) from what I know of this language. a negative work attitude so to speak. This doesn"t quite work with other languages Arbeit- work, labor in German has no negative connotations, and neither does Travail in French, though Devoir is sometimes ( make-work) or Busy work such as homework assignments.