Claire Polosak has always found umpiring men's cricket matches easier than overseeing the women's game.

So it will be without too much trepidation that she steps out to officiate Sunday's JLT Cup one-day clash between NSW and a Cricket Australia XI, as the first woman to umpire a men's domestic fixture in this country.

"I actually find women's cricket harder to umpire, I find with the women's, the fielding is so good but sometimes the running hasn't caught up between the wickets," Polosak said.

"The ball for men's is faster so you hear the nicks, they're slightly louder so there are certain differences.

"Both teams are out there to win a game whether it's a women's or a men's game, the intensity's the same they don't care."

Polosak is breaking significant ground at Hurstville Oval on Sunday, where she'll stand alongside umpire and former Test cricketer Paul Wilson.

The 29-year-old Goulburn product is a regular in men's first grade cricket across Sydney, and umpired four matches at the ICC Women's World Cup in England earlier this year.

She's been on Cricket Australia's development umpire panel for two years, officiated at last year's Women's T20 World Cup and has previously been a third umpire in men's domestic cricket.

When she received a phone call from her umpiring idol Simon Taufel to tell her she'd been appointed to a JLT game, Polosak did a "bit of a jig" before calling husband Evan to tell him of the news.

Then her mind turned to the task at hand, which will involve overseeing a game potentially featuring several international stars including Mitchell Starc and Nathan Lyon.

And despite the jump in standard this weekend, which will include faster bowling and more powerful ball striking, Polosak said her routine wouldn't change.

"There's preparation, there's playing conditions, learning the players, having a meeting with your teammate...discuss what signals you're going to be using, how you're going to communicate," Polosak said.

"Physically, it's very similar stuff to a player, fitness, core strength, back and legs because you're standing up on the field for seven hours.

"I've got mental triggers so I'm able to watch every ball as you go so you can settle into that.

"If I do feel that the ball is a bit fast, I take a step back because that just gives you a little bit of time. At the moment I'm fortunate that I haven't been in that situation. If you have good positioning, watching the ball, hopefully that reduces your chance of injuries."

NSW will play South Australia on Friday at Hurstville Oval two days before Polosak's umpiring debut.