Human services professionals work on the in direct contact with clients.

Human services professionals work on the Frontlines in direct contact with clients.

Explanation:

Human resource professionals work on the front line. Let us understand what a front line workers do.

Mostly they would be the first person to answer people over calls, they establish connection with the client, sometimes give room to people to make a deal, guide and make the operation successfully run in the organization.

They are the people who define strategies for the business to function, collaborate with people, organize events, find root cause of the problems, solve queries, and they work both front end and back end.