a prize, bonus, or award given as an inducement to purchase products, enter competitions initiated by business interests, etc.
"they encouraged customers with a premium for loyal patronage"
is a type of (narrower)
something given for victory or superiority in a contest or competition or for winning a lottery
"the prize was a free trip to Europe"
is a type of (narrower)
an additional payment (or other remuneration) to employees as a means of increasing output