Not liable for some of the complex emptying procedures (6)
I believe the answer is:
exempt
'not liable' is the definition.
(I've seen this in another clue)
'some of the complex emptying procedures' is the wordplay.
'some of' says the answer is hidden in the clue.
'EXEMPT' can be found hidden inside 'complex emptying procedures'.
'for' acts as a link.
(Other definitions for exempt that I've seen before include "Not liable, as others may be" , "Not subject to (eg taxation)" , "Not subject to, taxation say" , "Not subject to or liable for" , "free from tax, say" .)