In 1938, as part of the Dalfram dispute, he was ridiculed as Pig Iron Bob, the result of an industrial conflict with the Waterside Workers' Federation of Australia whose members had refused to load Australian pig iron being sold to an arms manufacturer in the Empire of Japan, for that country's war against China. In 1939, he resigned from the Cabinet in protest at postponement of the national insurance scheme and insufficient expenditure on defence.
In 1938 as part of the Dalfram dispute, he was ridiculed as Pig Iron Bob, the result of an industrial conflict with the Waterside Workers' Federation of Australia whose members had refused to load Australian pig iron being sold to an arms manufacturer in the Empire of Japan for that country's war against China In 1939, he resigned from the Cabinet in protest at postponement of the nat,ional insurance scheme and insufficient expenditure on defence.