PDFWAC 260-32-170
Betting.
(1) A jockey shall only be allowed to wager on a race in which the jockey is riding, and then only if:
(a) The owner or trainer of the horse, which the jockey is riding, makes the wager for the jockey;
(b) The jockey only wagers on his/her mount to win or finish first in combinations with other horses in multiple wagers; and
(c) Records of such wagers are kept and available for presentation upon request by the stewards.
(2) A jockey shall be allowed to wager on any race as long as the jockey has fulfilled his/her riding engagements for the day and left the jockey's quarters.