Tabloid workers featured in newspaper piece (8)
'piece' is the definition.
(fragment is a kind of piece)
'tabloid workers featured in newspaper' is the wordplay.
'tabloid' becomes 'rag' ('rag' can be a synonym of 'tabloid').
'workers' becomes 'men' (man is a kind of worker).
'featured in' indicates putting letters inside.
'newspaper' becomes 'ft'.
'ragmen' put inside 'ft' is 'FRAGMENT'.
(Other definitions for fragment that I've seen before include "Piece broken off something else", "Incomplete part", "Broken-off piece", "Scrap", "Shard".)