Am I being paid fairly?

I work as a paralegal/ office manager at a smaller firm with one attorney. However we have a very steady stream of income. I am currently the only paralegal, while also maintaining many aspect of the firm. My job requires preparing all estate planning documents, doing everything for the probate of a deceased person’s estate (minus the initial consultation with the attorney), and real estate transactions. Additionally I am responsible for billing my time and reviewing all invoices. I am also responsible for telephone calls to clients and a majority of correspondence with clients. Who I first started working at the firm three years ago, we had several office employees who were full time and one of them being an office manager and legal assistant with over 40 years experience. She has since retired and therefore her responsibilities have fallen on me. She does come in about twice a week for a few hours to review some of the more complicated work I have done. We now have no other full time employees besides me. It has been extremely difficult to find consistent good employees. We do have a couple of college students who work part time at the receptionist desk.

I also come in most weekends and stay well after five a lot of days. We are just severely understaffed.

I currently make 48 thousand a year with a year end bonus. I am exhausted and feel like this is not enough for everything that I do, but at the same time it’s more than a lot of people make. I only bring home 42,000. I also have no benefits being it is a very small firm. However, we are very busy with about three new files coming in a day.

Please let me know if I’m being ungrateful or should have a serious talk with the boss.