Overtime and Superannuation: The Hidden Extra Cost Most Miss

When businesses calculate the cost of overtime, most only look at the hourly rate × hours worked. They forget one very expensive line item: superannuation.

In Australia, the Superannuation Guarantee (currently 12% as of 2026) must be paid on most overtime hours. That means every dollar of overtime you pay triggers an extra 12 cents in super contributions — on top of the base wage, payroll tax, and other on-costs.

Why this matters more than most leaders realise

• A $1 million overtime bill actually costs you around $1.12 million once super is added.
• In high-overtime environments (police, ambulance, hospitals, corrections, utilities), this extra super cost can easily run into hundreds of thousands — or even millions — per year.
• Most internal reports and budget forecasts only show the direct wage cost, so the true size of the overtime problem stays hidden.
• When you recover wasted overtime through better controls, you also save the super that would have been paid on that waste.

Real-world impact in the public sector

Recent audits have shown agencies paying super on overtime that should never have been approved in the first place — false claims, incorrect calculations, or unnecessary shifts. Because super is paid automatically through the payroll system, these overpayments are almost never questioned until a detailed external review is done.

The smart way to see the full picture

A proper overtime audit doesn’t just show you the direct wage leakage — it shows you the total cost including super, payroll tax, and other on-costs. Once you see the real number, the case for fixing it becomes undeniable.

Overtime Solved’s 48-hour analysis includes the full loaded cost of every overtime pattern we identify. You get the complete picture — not just the headline wage figure — so you can make informed decisions and redirect the maximum possible savings back into frontline services, technology, and staffing.