Obrero is worker in Spanish.
It IS in Spanish! In English it means 'female worker'.
petrolero
to work
compañero: classmate, co-worker.
It means you are hard working
compañera is Spanish for female companion or Co-worker
It's a noun, feminine form of worker.
It depends on what country you are in. If you are referring to the U.S., it depends on which state you are in.
Oficinista is a Spanish equivalent of 'office worker'. It's pronounced 'oh-fee-thee-NEE-stah'. It's a feminine noun whose definite article is 'la' ['the'], and whose indefinite 'una' ['a, one'].
trabajador/trabajadora social OR asistente/asistenta social
The spelling peon is a Spanish term for a poor farmer, serf, or worker.