Sometimes dogs limp or appear to be limping on the paws opposite to the one that actually hurts. If you still can't find anything, you should probably consult your vet. I doubt it's related to getting fixed, but crazier things have happened.
Your legal entities are required to pay payroll tax and social insurance such as social security on your payroll. In Oracle Fusion Applications, you can register payroll statutory units to pay and report on payroll tax and social insurance on behalf of many of your legal entities.
An employer-employee relationship exists when a person who hires an individual to perform services has the right to exercise control over the manner and means by which the individual performs his or her services. The right of control, whether or not exercised, is the most important factor in determining the relationship.