1939年，劳工部更名为劳工和国民服务部（英語：Ministry of Labour and National Service），反映了1939年《国家兵役（武装部队）法》规定的新职责：分配人员在武装部队、民防和工厂之间工作。1945年4月，劳工部与失业保险和援助有关的职能移交给成立于1944年的国家保险部（英語：Ministry of National Insurance），二战结束后，国民服务职能被交给国防部的征兵部门。
1953年，抚恤金部和国家保险部合并成立抚恤金和国家保险部（英語：Ministry of Pensions and National Insurance）。[6]
1959年劳工和国民服务部复名劳工部。
1966年抚恤金和国家保险部更名为社会保障部（英語：Ministry of Social Security）。
^How to understand public sector spending - Annually managed expenditure (AME). HM Treasury. 2013-05-29 [2016-08-02]. （原始内容存档于2016-09-18）. Annually managed expenditure, or AME, is more difficult to explain or control as it is spent on programmes which are demand-led – such as welfare, tax credits or public sector pensions. It is spent on items that may be unpredictable or not easily controlled by departments, and are relatively large in comparison to other government departments.
^How to understand public sector spending - Departmental Expenditure Limits (DEL). HM Treasury. 2013-05-29 [2016-08-02]. （原始内容存档于2016-09-18）. The government budget that is allocated to and spent by government departments is known as the Departmental Expenditure Limit, or DEL. This amount, and how it is split between government departments, is set at Spending Reviews. Things that departmental budgets can be spent on include the running of the services that they oversee such as schools or hospital, and the everyday cost of resources such as staff. The government controls DEL by deciding how much each department gets.
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