is it illegal for a waitress to post a picture of a reciept on a social media site?

[Annikah]

The receipt has the customers first name last name and middle initial a sample of her handwriting and the last 4 of her credit card.

[Dee*]

Not illegal.. but its frowned upon.

[RE]

Did you write something insulting to her on the receipt? Maybe you should stop doing that.

[Yeti]

The main issue is going to be if her employer disapproves. The receipt is the employer's property, and the waitress had access to it as part of her job.