All perfect praise be to Allaah, the Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
It is permissible for these employees to accept the gifts that are given to them by the services companies through the company where they work as the purpose of these presents is advertising. However, if these presents are a bribe that is given so that the company giving them may thereby get something that they do not deserve, it would be impermissible to accept it.
Allaah Knows best.