Both flexible schedule options permitted employees to earn and carry over 4 credit hours. Under the compressed schedule program, full-time employees could work a 5-4/9 or a 4/10 schedule. Similar to flexible work schedules, both compressed schedules included a flexible time band and core time.
You may use a certificate of citizenship or a naturalization certificate, to prove that you are a US citizen. But both the documents are not the same. A US citizenship certificate is granted to a person who acquires or derives citizenship from his US citizen parents.
A certified birth certificate copy is required for getting a US passport and when applying for Social Security benefits. A birth certificate is considered valid proof of US citizenship by federal, state and local government agencies. A birth certificate may be required when applying for some jobs and may, in the future, be required when getting or renewing a driver's license.