Should I say:
"in my previous work" or "in my previous job"?
"during my work/job"?
"It's my work" or "It's my job"?
In my previous job/In my previous employment/In my previous post
It is my work = generically what I do to earn a living >> I am involved in educating secondary level students. It is my work.
It is my job = the specific thing I do in order to earn a living >> I am a teacher. It is my job.
"During my job" - you would need to identify the context of use.