Pay commissions to all hotel employees for referrals. Have your marketing department create spa service promo cards. These cards will reflect a current spa special and will allow a hotel or resort employee to print and sign their name on the back with date. This will allow them to receive a 10-15% commission on the guest referral. Your hotel Accounting Manager can put a program in place for this type of employee commission. This will also excite all hotel employees to promote your spa.