Gwyneth Paltrow says it’s hard being a mom who works long hours on a movie set. Working moms with 9-to-5 type jobs, she insinuated, have it easier.

One New York City mom, who also works for a living, isn’t having it. And she penned a snarky open letter to Paltrow in today’s New York Post.

Here is what inspired the mom in question to respond to Paltrow’s lament:

She also pointed out that things are more difficult for her than other moms, because of the demanding nature and unpredictable schedule of her acting career.

“I think to have a regular job and be a mom is not as, of course there are challenges, but it’s not like being on set,” Paltrow said.

Paltrow, who announced this week she is “consciously uncoupling” from husband Chris Martin of Coldplay fame, probably won’t want to read what this mom has to say.

Thank God I don’t make millions filming one movie per year” is what I say to myself pretty much every morning as I wait on a windy Metro-North platform, about to begin my 45-minute commute into the city. Whenever things get rough, all I have to do is keep reminding myself of that fact. It is my mantra….

We’re always gabbing about how easy it is to balance work and home life. Whenever I meet with them at one of our weekly get-togethers — a breeze to schedule, because reliable baby sitters often roam my neighborhood in packs, holding up signs peddling their services — we have a competition to see who has it easier. Is it the female breadwinners who work around the clock to make sure their mortgages get paid, lying awake at night, wracked with anxiety over the idea of losing their jobs? Or is it the mothers who get mommy-tracked and denied promotions? What about the moms with “regular” 9-to-5 jobs, who are penalized when their kids are sick and they don’t have backup child care?