Well, not exactly. Society doesn't look objectively at a job and assign it a value. The job markets do that. In the same way that computer programmers are free to take up teaching, teachers are also free to take up computer programming if they want more cash.
Of course it's a value judgement! The mere fact that care workers are paid minimum wage or just over is what the market will bear. The same market that is in our society. Immigrant workers are often employed in the low pay jobs because the indigenous population prefer to value themselves more highly - rightly or wrongly.
And why should someone who is in healthcare (like a nurse for example) because they are compassionate and caring and they receive much job satisfaction through looking after and caring for people, be made to change career into one they dislike because it pays better?
Why do we not, as a society, appropriately recognise the value that people who really contribute to the welfare of the same society? I'll make it easy for you:
a) - Because western society is sick
b) - Because western society values status and monetary wealth as important
c)- Both of the above