What do you mean by employer subsidy here? Are you referring to the system where employers reimburse the costs of transit fees for commutes?
Many companies in Tokyo prevent their employees from commuting by car (legally commute is covered by workers comp insurance, and many companies do not elect the more expensive car coverage option) - so even in the absence of workers paying for the commute, public transit (or bike/walk) would be the only realistic option.
Many companies in Tokyo prevent their employees from commuting by car (legally commute is covered by workers comp insurance, and many companies do not elect the more expensive car coverage option) - so even in the absence of workers paying for the commute, public transit (or bike/walk) would be the only realistic option.