Does September 7 fall on Labor Day every 11 years?

Within any given century, depending on when you start counting and when the leap year happens to be within the cycle you are counting, the rotation of days follows a cycle.

It should also be noted that century years are not leap years unless they are divisible by 4.

Asking for the first Monday of September to be the 7th day of September and starting from 2010.

The sequence is:

5 years

6 years

11 years

6 years

Therefore Labour Day, in the USA, taken as the first Monday in September, will be on the 7th in the following years;

2015

2020

2026

2037

2043

2048

2054

2065

2071

2076

2082

2093

2099