It can be, Manoj. My grandmother and a job which paid her based on how many boxes she constructed. It was called piecework. She was very good at it and was paid well. So, her hard work was easily measured by what the boxes she constructed.
Income is not permanent or I think every impermanent thing is not perfect. We have a lot of ways to add more value in income like work as a freelancer in part time or full time or do anywhere part time like tuition for kids, part time teacher and many more skills.
Income is not measurable or how can we say this amount is perfect income. Can we measure someone’s hardwork in amount? Income is not only a word this is an emotion or we can say income is directly or indirectly related our emotions and everything related to emotions are “perfect itself” so yes we can say “everything is perfect itself”.