Although set in Seattle it is actually filmed in Vancouver. Almost every actor in the series is Canadian. This allows the production to take advantage of the numerous tax credits and lower costs of the Canadian dollar. (2021).
In S1E5 the jerky boss Kevin has a red stapler on his desk as call-out to the red Swingline stapler featured in Office Space, starring Ron Livingston
Episode titles are song names.
In season one it can be seen in the scrapbook scene in episode 9 that Ollie (Cutter's deceased sponsee) is played by musical artist Andy Shauf who also is included in the soundtrack many times.