孫請け

1. Origins, structure, and basic meaning

• Structure: 孫請け (まごうけ) is a noun for second-tier subcontracting or the subcontractor at that tier.
• Basic usage: 孫請けとして担当する identifies a company's role; 元請けから孫請けまで maps the range of contracting levels.

2. Common pitfalls and similar expressions

• Contractor role and contract tier
  • として marks the capacity in which the firm works, while から...まで places that tier at the end of a contracting chain.