more研究の知恵

Based on the search results, I can see some relevant information about construction worker policies (mostly from China's sources, but I need to focus on South Korea). Since the search didn't return specific Korean construction data, I'll write the article using my knowledge about Korean construction industry context (안전보건공단, 중대재해처벌법, 건설근로자공제회, etc.) while following the guidelines - using vague references like "업계 보고서" instead of fabricated specific data.

Based on the search results, I can see some relevant information about construction worker policies (mostly from China's sources, but I need to focus on South Korea). Since the search didn't return specific Korean construction data, I'll write the article using my knowledge about Korean construction industry context (안전보건공단, 중대재해처벌법, 건설근로자공제회, etc.) while following the guidelines - using vague references like "업계 보고서" instead of fabricated specific data.