A Flame at the Pier
A young dockworker who owes his life to his boss becomes embroiled in union activity. Directed by Masahiro Shinoda.
Starring Takashi Fujiki, Tamotsu Hayakawa, Mariko Kaga, Kôji Nanbara, Kyōko Kishida, Yasushi Nagata, Asao Koike, Shinji Tanaka, Shigeru Kōyama, Takamaru Sasaki
Watch "A Flame at the Pier" on Criterion Channel released in 1962. It's a drama and music movie, and has a rating of 6.8 out of 10 from Imdb which is usually fine for this kind of movie.