Final answer:
The workforce for 3PL and 4PL organizations is typically mixed, including unionized, non-union labor, and automated systems, varying by company and region (a).
Step-by-step explanation:
The majority of the laborers for 3PL (Third-Party Logistics) and 4PL (Fourth-Party Logistics) organizations can vary widely depending on the specific company and the region in which they operate. However, it is common for 3PL and 4PL providers, especially those that are larger and operate on a global scale, to utilize a mixed workforce.
This may include unionized labor, non-union labor, and in some cases, automated systems to handle different tasks and functions within their operations. Factors influencing this mix include local labor laws, industry practices, cost considerations, and the level of technology adoption within the organization.