Firstly, I suspect ‘Google for Jobs’ may be the incorrect term, is it called 'Google Jobs' now?
I'm in Europe, Ireland to be precise. We don't have ‘Google for Jobs’ here, and I read that we may not for some time, if at all, if some lobby groups have their way.
I run a job board site - 95% of the jobs are in Europe and about 80% of our job seekers are there too.
Is there any point in us marking up with JSON-LD or HTML Microdata?
If the answer is Yes, I have a follow up question.
Do you just put it on the job detail page, or what about the category listing page where you have multiple job titles linking to the detail pages?