Relationship between attributes of individual workers and concentration at work Reo Sugino, Shin-ichi Tanabe, Mikio Takahashi, Tomoko Tokumura, Kazuki Wada, Tomohiro Kuroki, Jun Nakagawa, Jun Shinoda and Takuma Shinoyama E3S Web Conf., 111 (2019) 02050 Published online: 13 August 2019 DOI: 10.1051/e3sconf/201911102050