In the movies of those times, you can see young boys in the company scene often. Those boys were called kyuji (給仕), which means “waiter” literally. They are doing odd jobs in the company including serving tea, ushering visitors, buying tobacco, etc. Ordering lunch for the individual requests was also an important job. Those boys were hired often as soon as they graduated from elementary school.
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Tokyo Family
2013

Blood and Bones
2004

The River
1984

Café Lumière
2004

All Day and a Night
2020

El Chicano
2019

Shara
2003

Inuyasha the Movie 2: The Castle Beyond the Looking Glass
2002

Inuyasha the Movie 3: Swords of an Honorable Ruler
2003

No Regrets for Our Youth
1946