Union group sign for calculators (9)
I believe the answer is:
actuaries
'for calculators' is the definition.
(actuary is a kind of calculator)
'union group sign' is the wordplay.
I cannot quite see how this works, but
'union' could be 'tu' (abbreviation for trade union) and 'tu' is found within the answer.
'sign' could be 'aries' (star sign) and 'aries' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for actuaries that I've seen before include "They know about risks" , "Financial experts" , "They calculate insurance risks" , "They calculate insurance premiums" , "Experts in calculations for insurance companies" .)