Monotony of the job and physical issues, i.e. back and knee problems
Reviews were not fair- the praise had to match the raise and the raises were always set low
Psychologically abusive Backroom Team Lead that HR did nothing to remedy after repeated complaints by multiple team members.
ETL positions are usually only given to young, attractive kids fresh from college. If you did not grow up wealthy enough to get your degree young, are middle-aged, unattractive, or are trying to move-up from a team member position without a degree, then don't even think about it.
There was always a subtle sense of disrespect and disregard for the team members by the upper management and it was a real kill-joy.