overworked
🇺🇸
/ˌəʊvərˈwɜːrkt/
🇬🇧
/ˌəʊvəˈwɜːkt/
working too hard or too much
The overworked staff needed a break because they were exhausted from long hours.
used too often so it loses its effect
The overworked phrase became boring because everyone used it too much.