This is the 1359th most frequent Polish word.
pracownikom
"Pracownikom" means "to the employees" in English.
The word 'pracownikom' here is the dative case plural form of 'pracownik,' meaning 'employee.' It is used to indicate the indirect object, i.e., the recipients of the bonuses.
Firma dała pracownikom premie za ich ciężką pracę.
The company gave the employees bonuses for their hard work.
In this sentence, 'pracownikom' again appears in the dative case plural to denote the receivers (the employees) of the certificates.
Wręczyliśmy pracownikom dyplomy uznania za osiągnięcia.
We handed out certificates of appreciation to the employees for their achievements.
Here, 'pracownikom' conveys the indirect object (employees) who are receiving support in terms of mental health.