Work or spouse visa to PR

Hello, I currently have a work visa for 5 years but I got married to a Japanese national for 2 years. So I want to think about permanent residency.
1) In order to get PR, do I need to switch to spousal visa and wait another 3 years?
2) Or can I apply with the current work visa after my marriage has 3 years?
3) Also, would the fact that I forgot to notify immigration of my job changes prevent me from obtaining permanent residency?
Thank you!

Your best bet would be to contact immigration on how to apply for the status change. You don't need to tell them all of your own personal details, just ask and see what they think should be done.

1) Married for 3 years and stayed in Japan for at least 1 year, spouse SOR with at least 3years period of stay
2) 10 years, but you could try below ..
3) Most probably negligible unless your new work <> SOR requirements.

There is another way to get PR without switching to Spouse, which is by going through points system of HSP. You don't need to have/switch HSP but maintain/satisfy at least 70-80 points(based on HSP points)and have the longest period of stays(which is what you have now 5 years).

So check the info below and start counting your points.
Check here:
Section2 part 6&7
https://www.moj.go.jp/isa/applications/resources/nyukan_nyukan50.html?...

explanation/example
https://continental-immigration.com/hsp/english/70p75p/
https://continental-immigration.com/hsp/english/highly-skilled-profess...

I have no knowledge/experience with HSP system, which was mentioned by another poster earlier. So excluding that:

1) As far as I know, it would probably be faster if you change to gspouse of Japanese national g status. I donft know how long your current employer-sponsored status of residence (SOR) is, but when the time to extend your work SOR approaches, instead you can make an application for gchange of resident statush to gspouse of Japanese national.h If at that time, you receive a 3-year or 5-year SOR as gspouse,h and if at that time you have already been married for 3 years and in Japan for 1 year (I believe), you will fulfill the conditions to apply for PR.

2) On work SOR, youfd need to have been Japan for 10 years to be eligible to apply for PR.

3) Not really. If you reported it a little late (later than 2 weeks) or something, Ifd say it is a minor error, though it was a violation of the rules. But you reported the change in the end, I hope?

Best wishes.