Fey became the first female head writer of Saturday Night Live in 1999 and while comedy may seem like a boy's club, she said that jokes made it onto the show if they were funny enough, regardless of who wrote them.
Speaking to RTÉ TEN, Fey said: "The great thing about that job was that there was always a kind of even playing field, you had the table read where everyone wrote and they would read them out loud, and everyone laughed or they didn't laugh.
"I think where you get in trouble is when people are theorising something in a boardroom saying 'what I think people want to see is blah blah blah' but when you put it in front of an audience, an audience will laugh at whatever's funny."
Pell, who has also worked on SNL since the 1990s, added, "If you have a crowd laughing at something then you can deny that, and it has momentum to move forward and be made, but if people have already decided in their theories that something gets blocked, then it doesn't get through.
"I think now, all of those floodgates have opened and there have been enough examples of varying gender originated comedies that make the same money, so it's all about money ultimately with some of that stuff."
On their new comedy Sisters, which co-stars Amy Poehler, Fey said: "We did have a lot of fun making the movie, which I keep saying doesn't really matter unless the movie is fun to watch, but I do think the movie is fun to watch also."
In the film, which is about two adult sisters who decide to throw one last house party in their family home before it's s sold, Fey plays Kate, the wild child of the family, while Poehler plays Maura, the more straight-laced sister.
When asked which sister she was more like growing up, Fey told TEN, "I think all three of us, me, Amy and Paula, were all more Maura."
Pell, whose teenage diaries formed the basis for the film, added that she identifies with both characters, "We had, I think, the nerdery of Maura, I just made that word up, but I also was in high school quite a big drinker and partier . . . So I'm a mix of the two."
Click on the link to watch our full interview with Tina Fey and Paula Pell.
Sisters is in cinemas now, and you can check out our review here.