A 27-year-old Texas woman and single mother was fired from her job at a daycare before her first day of work because of a Facebook post. The woman, Kaitlyn Walls, wrote that she didn’t like working in childcare, and her post soon spread to an 8,000-member yard sale group in the community.

“I start my new job today, but I absolutely hate working at day care,” she wrote. “Lol, it’s all good, I just really hate being around a lot of kids.”

The post soon reached her employer, and she was told not to come in for her first day. She also faced harsh attacks in the online community that showed her posts, and though many of the worst ones have been removed, some obscene language remains.

“It really was a big mistake,” she said. “I’m not going to post anything like it ever. No matter how I feel.”

Though Walls learned her lesson, it can also serve as a crucial reminder for others. Always check your privacy settings to ensure your posts are only being seen by the right people, and steer clear of posting anything that could land you in hot water. More and more employers are checking the profiles of potential employees, so it’s best to play it safe.