There are a few ways human resources training is conducted in professional servicing firms. For many large companies, a well-trained human resources department is key to running a successful business. Employees of these companies need a place where they can go when a payroll discrepancy occurs, a complaint needs to be filed, or when management needs a report on productivity and or labor management. The human resources department becomes a voice for the employee who is not always heard in a large company. This is why training is so important. Human resources training occurs in all cities in most major companies.