Probationary Employees | U.S. Merit Systems Protection Board Information Sheet No. 4
Snippet of Article: "...Probationary employees do not have a statutory right to appeal their termination to the Board. If you are a preference eligible in the excepted service and you have not completed 1 year or more of current, continuous service in the same or similar position, you may not appeal your termination to the Board. If you are a non-preference eligible in the excepted service and you have not completed 2 years or more of current, continuous service, in most circumstances you may not appeal..."
Source: www.mspb.gov