When did "call in" change to "call out"? And why? You "call in" to work to tell them you will be out.
It feels like it was in the last 5 years or so, but all the new people (younger than me) at work now say "call out," and I don't understand the lexicon shift.
In my experience "call out" was more common for a shift-style job at a place with many low-level, younger employees. Think fast-food, retail, etc. Maybe had to do with the perception that another employee is just "slotted in" to replace the shift? Regardless, these same people are now getting older and the term has spread to other types of jobs...