The most common and most likely answer to this crossword clue is the 7 letter word WORKMAN
I've seen this crossword clue in Financial Times
W
O
R
K
M
A
N
Buddy explains!

The straight part
We know that "employee" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case employee = workman.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 WORKMAN mean?
WORKMAN noun- A man who labours for wages.
- An artisan or craftsman.