Thanks for your question.
There is no telephone filing anymore. You would have to try to get a copy of your W-2. If this was for the 2009 tax year. you should contact your previous employer's payroll office or temporary agency for to get a copy of it.
If you are unable to get a copy, contact the IRS for assistance at(NNN) NNN-NNNN When you call, you'll need to provide your name, address, Social Security number, phone number and have the following information:*Employer's name, address, city and state, including zip code and phone number*Dates of employment*An estimate of the wages you earned, the federal income tax withheld, and when you worked for that employer during 2009. The estimate should be based on year-to-date information from your final pay stub, if possible. They will ask your employer to re-issue you a W-2.
If you have not received your W-2 by by April 15th, and have completed the above instructions, you may use Form 4852, Substitute for Form W-2. Attach Form 4852 to the return, estimating income and withholding taxes as accurately as possible.
If it was for the 2008 year or prior, you can file a Form 4506-T with the IRS for a transcript copy of your W-2.
Hope this helps,