[Tsuwabuki]

With a spousal visa, granted that your wife is a Japanese citizen, you actually have a lot of options. Your biggest qualification is that you do not have to be visa sponsored by a company. And as far as I am aware (we have a few spouses working in my school district), you can be hired for any job you are capable of performing. This means you could end up working for a company dealing with other immigrants to Japan, and of course, as long as you have a BA, you should be able to find a job teaching English (if that is something you are willing to do).

I would suggest you start looking for a job at the same time your wife is. Explain that you are a spouse, do not require visa sponsorship, what your nationality and native language is, and what your educational background is like.

It may take a while to figure out what you're going to do. Be aware, many of the jobs available to fresh-off-the-boat individuals that are not in the English teaching field are sketchy. I would recommend staying away from any commission based jobs, especially anything having to do with investments or financial accounts. People are skittish, clients are hard to find, commission does not pay the bills.

Also, be aware of your own happiness. There's no sense moving to Japan only to take a job that pays you too little and works you too hard. You won't enjoy what Japan has to offer if you're crammed into a tiny apartment, unable to afford some creature comforts, and never have time to go out because you're always working to make ends meet.