You can claim a deduction for the full amount of your travel expenses where both of the following apply:
your employer requires you to travel to a worksite for a short period to perform work
it would be unreasonable to expect you to return home each day, which means you must stay at or near that worksite while performing that work.
This is the case unless the place at which you stay becomes your temporary residence. That is, you are living away from home for work purposes – see Overnight travel expenses you cannot claim.
Travel expenses include:
meals, accommodation and incidental expenses
car, air, bus, train, ferry and taxi fares between home and the site.
If you are claiming travel expenses and you receive a travel allowance from your employer, you must record the allowance on your tax return at item 2.