The most common and most likely answer to this crossword clue is the 7 letter word MILLERS
M
I
L
L
E
R
S
Buddy explains!
The straight part
We know that "factory workers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case factory workers = millers.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 MILLERS mean?
MILLERS noun- A person who owns or operates a mill, especially a flour mill.
- A milling machine.
- Any of several moths that have powdery wings, especially Acronicta leporina and moths of the genus Agrotis.
- The common name of a flour-smelling mushroom, Clitopilus prunulus.