Actress Jennifer Esposito is taking a stance against CBS for what she calls "absolutely shameful behavior." The network had announced Esposito's leave of absence from the cop drama "Blue Bloods" following her request to a "reduced" work schedule due to her illness."CBS knows [they] PUT me on unpaid leave and has blocked me from working anywhere else after my doc said u needed a reduced schedule due to celiac," she tweeted on Oct.20. "CBS didn't listen to my doc and I collapsed on set. Which everyone saw! After a week off my doc said I could return to work but CBS ... (i)mplied that I was NOT truly ill and this was a scheme to get a raise! It's been almost two months without (bringing) me back to work + keeping (m)e from working anywhere else! ... Absolutely shameful behavior."