Operose

Operose is an adjective that means displaying much effort. 

The Latin word opus (OH poose) means ‘work,’ since the mid-18th century, our word of the day has been used to describe someone hard at work. Here’s an example of operose in use:

Kevin could be pretty operose at the factory, but personally, I never felt he showed much industry when it mattered most — at the company’s annual softball tournament.