HI Cmortred,
I did email regarding your question and i get back answer from them here is reply from SINP I hope it will help you.
Thank you for your inquiry. Please be advised that there is no limit on how many people can apply through the SINP under one employer. Please visit www.saskimmigrationcanada.ca to view a list of categories and to see if you are eligible to apply. If your employer has any questions they can contact our Employer Unit at 306-798-7467 option 4 or by email at immigration.employer @ gov.sk.ca
Sincerely,
SINP