「正社員なのに待遇に差」　バス運転手ら19人が大阪メトロを提訴 [大阪府]：朝日新聞

This page reports that 19 bus drivers at Osaka Metro filed a lawsuit seeking approximately 18 million yen in wage differences. Hired as "regular employees" for on-demand bus operations, they received bonuses of only 300,000 yen fixed, while reemployed colleagues received 2.2 months' salary. They were denied base raises and operation allowances given to reemployed staff. The plaintiffs argue that the law prohibiting unreasonable treatment disparities applies to regular employees as well, claiming the hiring explanation was misleading.