Your post raises 2 different issues:
(1) If you were terminated from your employment (as opposed to a voluntary quit situation), then your former employer bears the burden of proving willful misconduct. General poor work performance is usually not enough. Moreover, in the hearing, you should talk about the fact that you were working to the best of your ability, but were sometimes hampered due to your pregnancy, which you had informed your boss about.
(2) Depending upon the number of employees who worked at your former employer's office, you may also have a claim for pregnancy discrimination, in violation of Pennsylvania state law and/or the Federal Title VII law. Both laws prohibit employers from discriminating against employees on the basis of pregnancy. If other similarly-situated employees at your former firm (i.e., other employees with the same or similar job as you had) were not treated the same way you were, were not fired but were behind on their work, violated employer rules, etc., then you may have a claim for discrimination if the only difference between you and them was that you were pregnant and they were not.
Please feel free to contact me directly to discuss in more detail, if you would like.
Michael J. Davey, Esq.
mdavey@eckellsparks.com
(610) 565-3700
Answered on Nov 20th, 2012 at 8:32 AM