Pak Study MCQsLabour Day is observed on ? Posted on March 26, 2021March 26, 2021 by Rana Amir KhanA. 21st February B. 9th May C. 1st May D. 22nd MarchShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)