What does the cryptic crossword clue "Work hard on a new catchphrase (6)" mean?

This cryptic clue uses wordplay to arrive at the answer. Visit the page for progressive hints — definition, wordplay type, and a full step-by-step explanation.

Work hard on a new catchphrase (6)

Telegraph #29062 | 2 Down | 2019-05-28 flower

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Also seen in

Guardian Cryptic #27445 (2018-03-01) Daily Mail Cryptic #16906 (2022-08-19)