Free tool

Underpayment Claim Builder — Calculate Back Pay + Interest

FairWorkMate

Your details

Your name

Your address

Employer name

Employer address

Modern Award or EA name (optional)

Your classification (optional)

Pay periods

For each pay period, enter the period end date, hours, what you were paid, and either what you SHOULD have been paid (gross) OR the correct hourly rate. The tool computes shortfall and interest.

Period 1

Period end

Hours

Paid (AUD)

Owed (AUD)

OR — correct hourly rate

Note (optional)

Period 2

Period end

Hours

Paid (AUD)

Owed (AUD)

OR — correct hourly rate

Note (optional)

Period 3

Period end

Hours

Paid (AUD)

Owed (AUD)

OR — correct hourly rate

Note (optional)

How this works

• Shortfall per period = what you should have been paid minus what you were actually paid.
• Interest at 10% per annum simple interest, on each period's shortfall, from period-end-date to today. This is a reasonable proxy for the courts' pre-judgment interest awards under s547 of the Fair Work Act 2009.
• Six-year limitation: section 544 of the Fair Work Act bars claims older than 6 years. Periods older than that are flagged but excluded from the formal claim.
• The PDF is a draft Statement of Claim — not legal advice. Most workers should call the Fair Work Ombudsman (13 13 94) first — they can recover wages without you needing a lawyer.

Useful links

→ Quick Underpayment Check (single rate)→ Underpayment Enquiry Letter → EA Finder + Comparator → Fair Work Ombudsman — Wage theft & underpayments