Answer:
Yes, they could have but it would have been very difficult.
Explanation:
The reason is that the attitudes of the leaders of Nazi Germany and Imperial Japan (Hitler, and Hirohito, respectively) were very pro-war. Both leaders were pursuing an aggressive expansionary policy, whcih means that they wanted to conquer a lot of new land in order to be colonized by German or Japanese people respectively.
However, some of the policies of the British, French, and American government could have been different. For example, the could have been harder on Hitler at first, when he was pursuing the annexation of Austria, and Czechia.
Generally speaking, "assembly line jobs" did not represent an obstacle during this time, since this in fact increased productivity through the "specialization of labor".
Civil disobedience-- Martin Luther King Jr. used civil disobedience learned from men like Gandhi, Thoreau, and the teachings of Jesus Christ.
The method of civil disobedience uses boycotting, sit-ins, and non-violent protest. Martin Luther King Jr. organized the Montgomery Bus Boycott which was a boycott of the bus system started with Rosa Parks disobedience on segregated buses. It effectively attacked large economic systems which created change due to loss of income.