There are basically two worker strata: Japanese expatriates with 10x the benefits, their own HR department and zero motivation to go back to Japan, so it's usual to see senior figures hanging around in different assignments for up to 10 years, if they have friends in high places. The other stratum is comprised of locals, subject to a different set of rules and USA HR practices. Certain professional opportunities are limited to Japanese expatriates too, so you may find that you've reached your department/division ceiling, and the only option might be to move laterally. You might get lucky and score a good Japanese boss who'll empower and encourage you, but if you're not in one of the key and profitable consumer electronic or video game categories, you're likely out of luck, working harder, with much lower resources and struggling to keep up with demands and pressure from Tokyo HQ.