Here is a retention schedule I use for work; took out anything employment related. Hope it helps!
Accident reports/claims (settled cases) 7 years
Accounts payable ledgers and schedules 7 years
Accounts receivable ledgers and schedules 8 years
Audit reports Permanently
Bank statements 4 years
Capital stock and bond records: ledgers, transfer registers, stubs showing issues, record of interest coupons, options, etc
Permanently
Cash books Permanently
Charts of accounts Permanently
Checks (canceled checks for important payments, special contracts, purchase of assets, payment of taxes, etc Checks should be filed with the papers pertaining to the underlying transaction)
Permanently
Checks (canceled except those noted above) 7 years
Contracts and leases (expired) 7 years
Contracts and leases still in effect Permanently
Correspondence, general 2 years
Correspondence, legal and important matters
Permanently
Correspondence, routine with customers/ vendors
2 years
Deeds, mortgages and bills of sale Permanently
Depreciation schedules Permanently
Financial statements (year-end, other months optional) Permanently
General ledgers, year-end trial balances Permanently
Insurance records, current accident reports, claims, policies, etc
Permanently
Internal audit reports (miscellaneous) 4 years
Inventory records 7 years
Invoices to customers or from vendors
7 years
Minute books of directors, stockholders, bylaws and charter Permanently
Petty cash vouchers 4 years
Property records, including costs, depreciation reserves, year-end trial balances, depreciation schedules, blueprints, and plans
Permanently
Purchase orders 4 years
Sales records 7 years
Stock and bond certificates (canceled)
Permanently
Tax returns, revenue agents' reports, and other documents relating to determination of income tax liability
Permanently
Vouchers for payments to vendors, employees, etc (includes allowances and reimbursement of employees, officers, etc, for travel and entertainment expenses)
7 years