You can check the requeriments on the offical site:I worked part-time for 15 months and the total no.of hours are around 1900 can I apply for the essential workers category ?
https://www.canada.ca/en/immigration-refugees-citizenship/services/immigrate-canada/tr-pr-pathway/who-can-apply.html
https://www.cic.gc.ca/english/immigrate/trpr/eligibility.asp