"It's quite simple, really." Sadazane cleared his throat. "The business visa is largely confined to periods of just 180 days, which, I will freely admit, covers a part of what is being proposed under the Temporary Worker Visa. However, for those individuals working in a foreign country for longer than 180 days, being forced to renew their visa within half a year of their arrival could be... troublesome, we'll say. For example, let's say we have a teacher from Aosta working in Daitō. Normally, the school year begins at the start of the second week of April and ends in the first week of March. Let's then assume that this teacher arrives roughly two weeks before classes begin, so under the business visa, they'd have 180 days in the country. This would mean that, assuming they cannot renew their visa—something which can happen for any number of reasons—this teacher could only remain in the country roughly half-way into the school year, leaving them without work and said school scrambling to find a replacement.
"With a Temporary Worker Visa, such as what Daitō already uses, such a situation is, barring the worst of circumstances, unlikely to occur. Why? Because the individual's stay is determined by the length of their contract, up to five years at a time at an absolute maximum. This means that a foreigner working in Daitō will not have to worry about not being able to stay, whether they will be able to complete their contract or not. Instead, going back to this example, under the 'TWV', said teacher would be allowed to stay until mid-March, providing enough time for them to make the arrangements to return home."
Of course, though Sadazane didn't say it, he found that calling it a Business Visa was... confusing, given the contents of it. It appeared to be a work visa, however, it only lasted 180 days, similar to a standard short-stay visa. It also meant that there was room for confusion with actual business visas, which only permitted participating in commerce within a country. "In other words, either the current Business Visa being proposed should be retooled to better fit the standard of a Temporary Worker Visa, or it should be reworked to better fit the profile of an actual business visa as understood by most governments."