Labor Day Activity 1 May 2019 Jalaprathan Cement's Cha-am Plant held a sport day activity on occasion of Labor Day to encourage health and unity among its staff. Expand the image 2Labor Day Activity. Expand the image Expand the image 3Labor Day Activity. Expand the image Expand the image 2Labor Day Activity. Expand the image Expand the image 3Labor Day Activity. Expand the image