Scotiabank, RBC say their decision to cancel existing relationships with marijuana-related business are the result of risk management procedures.
Lower oil prices will continue to drag on performance.
January RBC PMI reading was 51.7 on a seasonally adjusted basis, down from 53.5 in December.
Changes are expected to include rules to ensure employers willfully seek Canadians for jobs before bringing in outside labour.
Resources rule, Alberta and Saskatchewan to lead.