Provincewide, Alberta (720 labourers, boilermakers, electricians, steam fitters, carpenters, scaffolders, operators, gas fitters, mechanics, technicians, millwrights, pipefitters, welders) and the Construction Workers Union, CLAC Local 63
![Willbros Facilities and Tanks (Canada)](https://cdn-res.keymedia.com/cdn-cgi/image/f=auto/https://www.hrreporter.com/dynamicdata/images/img10072_Willbros_Canada.jpg)
Renewal agreement: Effective Oct. 1, 2018 to May 31, 2021. Signed on Sept. 6, 2018.