Typically, your spouse's eligibility for an open work permit depends on the skill level of your job. If the job you are doing is listed as a National Occupational Classification (NOC) 0, A or B, your spouse or common-law partner could be eligible for an open work permit. You must also be authorized to work in Canada for a period of at least six months.
If you are working in an occupation that requires a lower level of formal training, your spouse may also be eligible for an open work permit through an active pilot project.
That means your job as retail sales representative is not included and you are not eligible for applying in this category.
Thanks.