Maybe. If it's up for new pads, do the pads first, then look at the level.

Park your bike so the master cylinder will not leak onto your tank or guards if the seal lets go for no reason other than 'fuck it, why not?'
This happened to me one night. Came out in the morning to find the MC wet with paint peeling off it. Luckily, not over the expensive paint.

And if you're topping up with DOT4, cover the bike.