职业安全，又名工业安全，是一种跨领域学科，横跨自然科学与社会科学，包括职业医学、公共卫生、安全工程学、人因工程学、毒理学、流行病学、工业关系（劳动研究）、公共政策、劳动社会学、疾病与健康社会学、组织心理学、工商心理学、科学、科技与社会、社会法及劳动法等领域。

职业安全是职业健康下的一个分支（另一分支为职业卫生），内容研究和关注职业岗位上的安全问题。故此，职业安全经常与职业健康合称为「职业安全健康」。

有关职业安全，若创建监视系统（Surveillance system），进行持续性、系统性搜集、分析与诠释数据，并将该信息提供给需要知道以采取行动的人，让相关的管理单位可以及时处理发生的意外或是调整策略是相当重要的。

Occupational safety and health (OSH) also commonly referred to as occupational health and safety (OHS) or workplace health and safety (WHS) is an area concerned with the safety, health and welfare of people engaged in work or employment. The goals of occupational safety and health programs include to foster a safe and healthy work environment. OSH may also protect co-workers, family members, employers, customers, and many others who might be affected by the workplace environment. In the United States the term occupational health and safety is referred to as occupational health and occupational and non-occupational safety and includes safety for activities outside work.