My immediate boss is happy for us to fly on an airline of our choice if the difference in price isn't more than about £100.
The head of the division is happy to pay for lounge access and other small cost items that make our lives easier (and probably woudl sanction J if we could afford it but we can't)
(Previous head of division (who only travelled to sign agreements and shake hands) always flew Emirates J and used to boast about getting upgraded and having a shower on A380 to staff who were actually there working incredibly long hours and had travelled on KLM and Air Kenya (with 6 hrs in Nairobi airport) with no IEE)