When Franklin D. Roosevelt was inaugurated in March 1933, almost 13 million workers—about 25 percent of the workforce—were unemployed. Industrial production was barely half what it had been in 1929. While millions faced starvation, dairy farmers poured fresh milk into the dirt to dramatize the fact that overproduction and cutthroat competition had driven milk prices so low that the farmers could not recover their costs. To pull the nation out of this crisis, the new administration developed a strategy with two central elements: (1) spreading the available work among larger numbers of employees and (2) increasing the purchasing power of the people. To spread the work available to more workers, the government would limit the number of hours already-employed workers could work, thus reducing the labor performed by these workers and forcing employers to hire new employees from among the unemployed. To increase purchasing power, the government would establish minimum wage rates and launch a public works program (construction projects including schools, hospitals, and bridges) that would pump federal funds into the economy. Instead of restricting hours and wages directly through legislation, the administration proposed to work through private trade associations, which had been unsuccessfully attempting to reduce hours and regulate competition on their own.

Section 7(a) of the NIRA required that each code prohibit employers from interfering with the workers' right to organize unions. This was the first such protection ever to appear in a generally applicable national statute. Regarded by many as a symbolic concession to labor, section 7(a) turned out to be the act's most contentious provision and arguably the most influential in the long run. As of early 1933, the unionized labor was down to fewer than 3 million members from a high of more than 5 million in 1920. But the year 1933 saw a spectacular upsurge in union organizing. In some industries, like coal and garment manufacturing, this recovery was already far along before section 7(a) was enacted. But in the great mass production industries of automobile, steel, and rubber, where previous organizing efforts had been crushed by mass firings and blacklisting, the upsurge came only after section 7(a) gave workers the confidence to organize.
National Industrial Recovery Act (1933): Major Acts of Congress
Can anybody say EFCA ???? Looks like we may well travel somewhat the same path yet again..

Another force for trucking regulation, Batts says, was the Roosevelt Administration's National Recovery Act of 1934. This act sought to establish good business codes among industries during the depths of the Great Depression. Many of the code's principles on rates found their way into the regulations established by the ICC.
The rise of truckload
Yes and had these ideas of freight regulation not been abandoned we in trucking might be a bit better off.