The most common and most likely answer to this crossword clue is the 5 plus 3 plus 6 letter word DOLCE FAR NIENTE
I've seen this crossword clue in The Times
D
O
L
C
E
F
A
R
N
I
E
N
T
E
More clues leading to the result DOLCE FAR NIENTE
Buddy explains!

The straight part
We know that "Welcome unemployment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case welcome unemployment = dolce far niente.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.