I think this is mostly a US thing. Why use yearly salary? You’re not paid once a year, are you? Most likely once a month. Referencing monthly salary makes much more sense.
“I’m making 50k”. Great, now I have to guess - dollars? Monthly? Yearly? If yearly then what’s the monthly paycheck? Net? Gross?
Federal Government can be nice because I’m salaried, but also get time and a half for OT, so I get the best of both worlds. On the other hand, we don’t get performance bonuses, and our yearly COLA takes a literal act of Congress to decide on the percentage.