Labor (See Laborious)

Have a very happy Labor Day!

la·bo·ri·ous 

adj.

1. Marked by or requiring long, hard work: spent many laborious hours on the project.
2. Hard-working; industrious, laborious

laborious

adj.

1. involving great exertion or long effort
2. given to working hard

3. (of literary style, etc.) not fluent laboriously

And, on a lighter note ….