For full time equivalent calculation, paid and 37.5hours/week
is the criteria for full time. If you work 10 hours per week,
which is usually the case in CU and OU, then 4-year experience is
equivalent to one year.
If you work 20 hours per week, then 2-year part time = 1year full time
if u worked ONLY on campus(university), then it's not counted at all. Your job must pax taxes and everything and registered at HRDC in order to be considered as 'real job' for immigration.
The minimum requirement that in the preceding ten years an applicant has had at least one year of continuous full-time employment experience (or the equivalent in part-time employment) has been amended to clarify that the employment experience, whether full- or part-time, must be continuous. Short periods of part-time employment experience dispersed throughout the preceding ten years cannot be added up to meet the one-year employment experience requirement.
If the added part time work experience coudl equals to a year's continuous full time experienct, that will count. As of whether you have paid tax, if the CIC doesn't ask for that, some reference letter will do