小保:张某包下了某建筑工地的木工活,以每日二百元的工资,聘用了农村木匠老李等人来施工。施工时老李不慎从脚手架上摔下,受伤入院。因没人与老李签劳动合同,老李的医疗费无人负责。为此老李来到当地劳动争议仲裁委员会提起申诉,要求确认自己的劳动关系。他的劳动关系该如何确定,工伤待遇谁负责? Small security: Zhang wrapped under a construction site of woodworking, daily wages of 200 yuan, employing rural carpenter Lao Li and others to construction. Old Lee accidentally fell from the scaffolding construction, hospitalization. Because no one signed a labor contract with Lao Li, Lao Li's medical expenses no one is responsible for. To this end Lao Li came to the local labor dispute arbitration commission filed a complaint, asked to confirm their labor relations. How to determine his labor relations, work-related injuries who is responsible for treatment?