Ventajas
They hire immediately so it works if you need a job quick.
Desventajas
Deadlines were often missed due to the sales teams not understanding production times and/or production managers using inefficient methods. This would lead to threats as well as increasingly onerous and punitive policies for the production staff. Managers would actively shut down feedback from production staff (i.e. the employees doing the hands-on work) on suggestions for better work strategies and more manageable policies. I worked there for a year and in that time there was also an OSHA violation (working without running water) and a National Labor Relations Act violation (employees told they were not allowed to discuss wages) as well as just general sub-standard working conditions. I don't think either of these were done knowingly, but were products of management not respecting lower level employees which led to policies that inadvertently crossed below legally allowed thresholds.