Hey, a 30% increase is the difference between carrying a 100 pound load in my arms and a 70 pound load. I'd definitely want that bonus at my stagehand job, it'd make carpentry more bearable. Especially given how weak I am in general.
Yee, like I was saying. If I'm supposed to carry a 100 pound object, say a section of stage, having 30 pounds of that offloaded would make the task that much easier and bearable.
Luckily it's a union job so there wouldn't be any of that lol. Other industries and workplaces though would absolutely abuse it, not naming any Amazons- I mean names.
Especially if it aided in static lift. Think of if it could lock your arm overhead, so that 20lbs item's weight is on your shoulders instead of your arms.