[causi]

Most American workers have an employment agreement with generalized clauses to the effect of "we can terminate you at any time for any reason" and "hours are thusly unless management needs you otherwise" and "duties are so-and-so but also anything else we want you to do."

I've had jobs where I kept the software running so smoothly 80% of my time at work was spent with a broom or a rag cleaning because "downtime" was not a thing.