Repeated slogan one in Labour facility sent up (6)
I believe the answer is:
mantra
'repeated slogan' is the definition.
'mantra' can be an answer for 'slogan'. I am not certain of the 'repeated' bit.
'one in labour facility sent up' is the wordplay.
'one in labour' becomes 'man' (I can't justify this - if you can you should give a lot more credence to this answer).
'facility' becomes 'art' (I've seen this in another clue).
'sent up' is a reversal indicator.
'art' reversed gives 'tra'.
'man'+'tra'='MANTRA'
Can you help me to learn more?
(Other definitions for mantra that I've seen before include "Word or sound to aid meditation" , "Several words repeated frequently" , "Much-repeated phrase" , "Incantation used as aid to meditation" , "Watchword" .)