work on hand/at hand

Hi,

The work I have on/at hand is pilling up.

Which phrase is correct?

Thanks.

The work I have to hand is piling up.

Beeesneees,
Can I say as below?
“The work I have to handle is piling up.”

That has a different meaning to Rickt’s question.

to handle - to deal with
to hand - here with me and easily reachable.