Nothing really special as an employee...the filing protects the Corporation. In fact, the BK court can require some things to be done that protect the BK that normally can't be done 9like modifying or breaking employment, even union contracts).
As an employee your payroll is given a very high priority as a claim and is almost always paid in full (at least up to a fairly high amount). Things like expense account reimbursements, bonuses, etc may be a different story.