Heisei 11-nen sangyō rōdō jijō chōsa kekka hōkokusho : kisei kanwa no moto ni okeru kigyō kōdō to rōdōmen e no eikyō ni kansuru chōsa = Industrial labour situation survey (1999) : survey on enterprizes' activity under the delegulation and its effect on employment / (Rōdō Daijin Kanbō Seisaku Chōsabu,, 2000)