How would you define 'being productive'?

End results.i believe in working smart and hard.

If you "think smart" (NOT hard), you'll be there:

"Minimizing energy and efforts = maximum result"

I believe it should be with less energy and maximum efforts leads to maximum results. Being Productive means always producing results consistently.

There is no wrong or right answer to this question. Whats important is the end results.

Sure it is not about catching people working wrong, it is about true financial gains measured at a higher level.

Previously, it was how fast you can go through your emails, promptly attending meetings and how good you can be at multi-tasking.

In Today's business, labour costs are typically the highest expenses on financial reports, reducing labour cost is the first survival steps business can take.

Productivity is value divided by time. it can be influenced by either increasing the value or decreasing the time and cost that goes into creating the value (also called efficiency). 

Productive = Result oriented approach with maximum utilisation of time and energy!

completing tasks on time

I define being productive as working smart not hard. You still can achieve maximum results by working smart.

Productivity=Output/Input.

Minimum input and maximum output.

Completing the task that was assigned to you in a short and smart way. instead of completing the task by putting lots of efforts.