In/on our jobs

[Xinfu]

-In high school, we learn a lot of complicated mathmatics, but in the future we can't put it into practice in/on our jobs.

IN/ON, which one is correct/wrong?

You're most welcome to comment on my sentence's other parts!

[Rusty]

-In high school, we learn a lot of complicated mathematics, but in the future we can't put them into practice in/on our jobs.

IN/ON, which one is correct/wrong?In our jobs / On our jobs (I would use the first, but either would be understood)

On the job (if the article is used, it's a set phrase and 'in' doesn't work)

[Xinfu]

Thank you~

[Rusty]

You're welcome!