For example, if you wish to calculate a monthly average number of hours worked and use six months of data, divide the total hours your employee works in six months and divide the result by six to determine the monthly average hours of work for the employee.
Social Security disability payments may be includable in taxable income and still not increase the tax you pay. A lump-sum retroactive payment of Social Security Disability Insurance (SSDI) may be includable in taxable income, depending on the amount and your other income and deductions.
Disability Benefits - Taxability. Income you receive from disability income insurance may or may not be taxable. If any portion is taxable, you must report that portion on your IRS Form 1040, FTB Form 540 or other State income tax form.