Workers having day out order a cab (6)
I believe the answer is:
hansom
'cab' is the definition.
(I've seen this in another clue)
'workers having day out order a' is the wordplay.
I cannot really see how this works, but
'order' could be 'om' (Order of Merit) and 'om' is located in the answer.
'a' could be 'an' and 'an' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for hansom that I've seen before include "Two-wheeled one-horse carriage" , "Vehicle with back-seat driver" , "transport from the old days" , "Victorian cab" , "Two-wheeled horse-drawn covered carriage" .)