This is the 4580th most frequent Russian word.
госслужащим
A "civil servant" or "government employee."
Here, 'госслужащим' is used as a predicate noun in the instrumental case, highlighting the main action of someone becoming a state employee.
Он стал госслужащим сразу после университета.
He became a civil servant right after university.
In this sentence, 'госслужащим' is in the instrumental case to express the professional role during a frequent activity.
Работая госслужащим, он часто ездил в длительные командировки.
While working as a civil servant, he often went on long business trips.
Here, 'госслужащих' is in the genitive plural form, indicating possession or relation in the context of workplace rules.