Final answer:
During the 1950s, the American workplace changes included companies offering higher salaries and benefits, blue-collar workers fearing job outsourcing, and an increase in service industry jobs.
Step-by-step explanation:
The American workplace underwent several changes in the 1950s:
Companies offered higher salaries and benefits as the American economy prospered post-World War II.
Blue-collar workers feared their jobs would be moved overseas, a concern stemming from the increased outsourcing of manufacturing jobs.
More service industry jobs became available due to the shift from an industrial-based to a service-based economy.
However, some of the other options provided did not occur during the 1950s, such as the fear of white-collar workers about their jobs moving overseas, which became more relevant later.