It's not my job

You get employees and then you get employees.

(One type will think): 'Work that falls outside of my area of responsibility is not my job...and I have every right to refuse to do it.'

(Another will see it another way and think): 'Opportunities that are outside of my current pay grade...I have every right to put my hand up to give them a go.'

People who offer a set amount of labour for a predetermined wage will do just enough of it to stay employed.

Companies who employ them will always try to get the most work from them for the fee they pay.

But those who see their jobs as an opportunity to grab new challenges with both hands...learn, develop their on-the-job technical and people skills (even if it is doing work that they may consider to be below them), so that they can become more competent and in demand for their expertise, are the ones that usually call the shots in salary negotiations with management later on.

The difference is mindset. One group is set on defending the status quo, the other looks to the future and chooses to build a repertoire of learnings and leverage.

It's the difference between: "It's not my job." or "It's not my job...yet."