I entered job related expenses but it didn't change anything on the tax refund or deduction. Why were there no changes?

[jerry2000 · Accepted solution]

That is a miscellaneous itemized deduction subject to a 2% floor. That means that only the amount of such expense that is more than 2% of your adjusted gross income is actually deductible. Further, itemized deductions provide no tax benefit until all of them added together are more than your standard deduction.
2015 Standard Deduction
Taxpayer under 65, not claimed as a dependent
$6,300 for Single
$12,600 for Married Filing Jointly, or Qualifying Widow(er) with dependent child
$9,250 for Head of Household
$6,300 for Married Filing Separately
For over 65 or blind, add $1,250 for each instance or add
$1,550 each instance if single and not a surviving spouse.