Work visa for a personal assistant?

I am looking to move to Japan as my partner is being relocated by his company. I currently work as a personal assistant and have some interviews lined up for PA roles in Tokyo, however, no one seems to be able to tell me if I will be granted a work visa. From my research, i don't think i fit into any of the dozen or so categories.
In addition to this hurdle, i never finished my uni degree (3/4 way through) but have completely a post graduate certificate. Can anyone tell me what my chances of moving to Japan with my partner are??!?!?!

Do you mean something like a secretary? If you are talking about Japanese employers, it is likely to be covered by "Specialist in Humanities/International Services," if it is a position that requires multi-language skills as well as other specialized office skills. However, please note that it will be the employer who will be sponsoring you for the work-permitting visa; so they have to really want to hire you for your skills, etc. If you get hired by a non-Japanese company that sends you to their location in Japan, then it will be "Intracompany Transferee" type.

As educational background to be granted work-permitting visa, you need to have bachelor's degree (or over ten years of relevant work experience), which is normally a four-year course. I don't know what the requirements for you to enrol in the post graduate certificate, but the school where you took the post-graduate course considered that you completed your degree, thus OK to enrol in their course, this part may be OK.

Dear AK

Thank you for your response.
Yes, the position i have applied for is a secretarial position and my employer (prospective employer) is a Japanese recruitment company that specialises in recruiting high level executives. They have insomuch said that should i qualify for a working visa, they would be happy to sponsor me. How do you see me falling under the category of humanities/international services? I an fluent in both English and Chinese and currently work as a high level secretary for a multinational accounting firm, but from my research on this type of visa, i can't seem to see how i fit in (the position I have applied for will only require me to speak English and have experience working as a secretary).

In terms of the educational front, pre requisites for studying for a post graduate degree is an undergraduate/bachelor's degree. Even though i had not finished uni, i had been working in the field for a couple of years so my work experience was what allowed me to complete the course.

A "Specialist in Humanities" requires a university degree or 10 years of experience, but a "Specialist in International Services" work visa requires just three years of related work experience, but no university degree.