The most common and most likely answer to this crossword clue is the 12 letter word UNEMPLOYMENT
I've seen this crossword clue in The Daily Telegraph
U
N
E
M
P
L
O
Y
M
E
N
T
Buddy explains!

The straight part
We know that "Kind of benefit one gets from not working?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case kind of benefit one gets from not working? = unemployment.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 UNEMPLOYMENT mean?
UNEMPLOYMENT noun- The state of having no job; joblessness.
- The phenomenon of joblessness in an economy.
- The level of joblessness in an economy, often measured as a percentage of the workforce.
- A type of joblessness due to a particular economic mechanism.
- An instance or period of joblessness.