係長

1. Origins, structure, and basic meaning

• Structure: 係長 (かかりちょう) is a post leading a small section or assigned unit. 係長が marks the explaining agent; 係長に相談する marks the consulted person.
• Basic usage: A section chief explains work to a new employee; a matter should first be discussed with the supervisor in charge.

2. Common pitfalls and similar expressions

• Supervisor giving instructions and person consulted
  • が marks the senior employee's speech action; に marks the person to whom a consultation is directed. Corporate hierarchies vary, so one English rank is not always exact.