責任者

1. Origins, structure, and basic meaning

• Structure: 責任者 is read as せきにんしゃ and means “person in charge” and “supervisor”.
• Basic usage: It refers to the on-site contact for problems and the supervisor who confirms work safety.

2. Common pitfalls and similar expressions

• 責任者に連絡する / 責任者が確認する
  • Use 責任者に連絡する for the contact and 責任者が確認する when the supervisor acts.