How does a human resources department support customer service?

Thanks for the question.

By making sure that the rights of the employees are protected and the promised comp&ben package is being provided. 

HR Department has the core job of providing stellar service to employees of the company, thereby becoming a customer service function for the employees!

bi recruiting right person for the right place , So that ones can realize his/her own potential 

by recruit talent, improve them skills, train them, reduce staff turn over

By hiring best candidates in CS and communication and by training them according to SOP and then regular evaluation of employees.

thanks for the invite :

by training ,development ,courses, motivation, and by provide services and guidnies

Greeting and Thank's 

By appointing the best candidates

HR hire according to department request. Customer care manager can request HR to hire the best candidates or candidates who understand customer service and sure can give a sheet which has some basic questions that customer service use everyday. IF a candidate fulfill that requirement than sure HR can bring the candidate on board.

Thanks for invitation ... waiting for more answers