Every state has different labor laws but generally no, most employers require you to be 100% fit(no restrictions) before they will allow you to return to work.
EXCEPT, those larger employer subject to ADA must not require that you be 100% fit - but only able to perform the ESSENTIAL functions of your job with or without reasonable accommodation.
Are contractors allowed to make up hours if they have a 40 hour week?
about only 8. no more.
This depends on age and location.
Yes it is possible to draw disability and work part time; however there are certain restrictions you need to be aware of. This site may be able to answer some of your questions, http://www.socialsecurity.gov/pubs/10095.html
There are 168 hours are in a week.
168 hours in a week
There are 196 hours in one week
It varies, there are no set hours for an interior decorator
There are 168 hours in 7 days (one week).
50-60 hours a week
There are 168 hours in 1 week.
168 hours per week