Labor Day is an US-American holiday that always falls on the first Monday in September, here a quick reference list of the upcoming dates to answer the question ‘What Day is Labor Day?’:

Historic Labor Day Celebration
Labor Day 2010 -September 6
Labor Day 2011 – September 5
Labor Day 2012 – September 3
Labor Day 2013 – September 2
Labor Day 2014 – September 1
Labor Day 2015 – September 7
Labor Day 2016 – September 5
Labor Day 2017 – September 4
Labor Day 2018 – September 3
Labor Day 2019 - September 2
Labor Day 2020 – September 7
Labor Day 2021 – September 6
Labor Day 2022 – September 5
Labor Day 2023 – September 4
Labor Day 2024 – September 2
Labor Day 2025 – September 1
Labor Day 2026 – September 7
Labor Day 2027 – September 6
Labor Day 2028 – September 4
Labor Day 2029 – September 3
Labor Day 2030 – September 2
For more background information about Labor Day and its history, check out this Wikipedia article: http://en.wikipedia.org/wiki/Labor_Day