How to Prepare a Monthly Workers Compensation Payroll Report

Essential data for the report

Gather each employee's name, job classification, total hours worked, gross wages, and any overtime or shift differentials for the month. Include separate totals for regular, overtime, and bonus pay because workers compensation premiums are calculated on the combined payroll amount.

Calculating taxable payroll

Multiply the total gross wages by the state‑specified workers compensation rate, which is expressed as a dollar amount per $100 of payroll. For example, a rate of $2.75 means $2.75 is owed for every $100 of payroll. The formula is:

• Taxable payroll = (Total gross wages ÷ 100) × Rate

Building the monthly report

Structure the report in a spreadsheet with these columns:

Sum the "Taxable Payroll" column to obtain the monthly premium base.

Filing and payment deadlines

Most states require the report and premium payment within 30 days of month‑end. Check your jurisdiction's specific due date; some accept electronic filing, while others still use paper forms. Late submissions can trigger penalties and interest.

Common pitfalls to avoid

• Leaving out part‑time or seasonal workers – all wages subject to workers comp must be reported.
• Using net pay instead of gross pay – premiums are based on pre‑deduction earnings.
• Failing to update classification codes when job duties change – mis‑classification leads to inaccurate rates.

Best‑practice tips

Automate data extraction from your payroll system to reduce manual entry errors. Keep a master list of classification codes and corresponding rates for quick reference. Conduct a quarterly audit of the reports to catch discrepancies before they affect compliance.