If you qualify for leave the employer is not able to terminate. There are anti-retaliation provisions that are involved, however, that is not to say you will qualify for this leave. You will have to submit your application to the employer and forward the physician certification to wife's doctor. Leave generally is granted to care for a sick family member, not as a mechanism to reduce hours in a work week. The totall leave you are able to receive is up to 12 weeks.