Also, you may not deduct travel expenses at a temporary work location if it is expected that you will work there for more than one year. You may deduct travel expenses, including meals and lodging, you had in looking for a new job in your present trade or business. You may not deduct these expenses if you had them while looking for work in a new trade or business, or while looking for work for the first time. If you are unemployed and there is a substantial break between the time of your past work and your looking for new work, you may not deduct these expenses, even if the new work is in the same trade or business as your previous work. Travel expenses for conventions are deductible if you can show that your attendance benefits your trade or business.
Special rules apply to conventions held outside the North American area.
If you are an employee, your allowable travel expenses are figured on Form 2106 or 2106-EZ . If you do not itemize your deductions, you cannot deduct these expenses. Good records are essential. See Topic 305 for information on record keeping.