Sure, hiring an in-house person can do this task, but 8hrs/day is quite long, and if you are living in the western world that will cost you roughly $42k-$55k/year.

A budget, time, and person you can allocate into somewhere more cost-effective.

Outsourcing in Third World Countries has been the game-changer for western entrepreneurs, backed up by the robust improvement in technology and specialized training, they are well equipped to handle your Social Media Management tasks.

They are:

Specialized

Cost-Efficient (Geoarbitrage)

Time-Efficient (You can focus more on growing your Business)