Why are jobs like wastewater engineers considered non-negotiable work securing their stability?

Answer

Failure of clean water supply represents an immediate crisis that cannot wait for an economic upswing.

Workers maintaining essential utilities, such as wastewater engineers managing treatment facilities or power linemen maintaining grids, perform tasks whose failure results in an immediate crisis rather than a manageable inconvenience. A failure in the clean water supply or a prolonged blackout cannot be postponed until economic conditions improve, making the function of these roles absolutely non-negotiable and thus highly resistant to workforce reductions during downturns.

Why are jobs like wastewater engineers considered non-negotiable work securing their stability?
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