The most common and most likely answer to this crossword clue is the 7 letter word OPEROSE
I've seen this crossword clue in The Guardian
O
P
E
R
O
S
E
More clues leading to the result OPEROSE
Buddy explains!

The straight part
We know that "like hard work/like hard work" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like hard work/like hard work = operose.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does OPEROSE mean?
OPEROSE adjective- Of a person: busy, industrious, or painstaking.
- Made with or requiring a lot of labour; painstaking, laborious.
- Tedious, wearisome.