ことはない

Do you know how to say ことはない in English?

The translations I've heard are:

there's no reason not to

which sounds very formal in a more casual sense you could say:

it wouldn't hurt to

For example:

Ah there's Tom, I'm a bit busy but it wouldn't hurt to say hello.

ああ　あそこはTOMです。今忙しいけどHELLOと言うことはないかな。

I am not too sure about my Japanese translation but the general feeling and usage of ことはない　matches it wouldn't hurt to.

It is often used when talking to yourself (as in the example) or when making suggestions.

A: I think that shop's a bit expensive for me.

B: Well, it wouldn't hurt to take a look.

A: Yeah... who knows maybe there's a sale.

B: True... let's go take a look.

Have a nice week,

Phil