I have to work some weekends at my job and I recently joined the National Guard which meets 1 weekend month. I work for a department of 3 and my boss wants me to try to reschedule 5 conflicts a year. My boss hired a friend of mine to fill while I was away at basic training and they let him go before I returned. The National Guard tells me I have to have the those weekends off, period. What can I do?