CTLR NOT HAPPY WITH 1 PERSON MIDSHIFT COVERAGE.

Narrative

DAL TWR AT LOVE FIELD; DALLAS; TX; IS ADMINISTERING 1 PERSON MIDSHIFTS. I BELIEVE THIS TO BE A SAFETY AS WELL AS A HEALTH ISSUE. DURING MY SCHEDULED 1 PERSON MIDSHIFT; I NEEDED TO TAKE A RESTROOM BREAK. I INFORMED DFW APCH THAT THE TWR WILL BE UNMANNED UNTIL I RETURNED AND I ISSUED A NEW ATIS INFORMING THE UPCOMING ACFT OF THE SIT. WHEN I RETURNED 20 MINS LATER; DFW APCH CTLR WAS YELLING FOR ME. THE DFW CTLR ADVISED ME THAT NUMEROUS ACFT HAD LANDED AND DEPARTED IN MY ABSENCE. HE THEN BEGAN TO GIVE A LINEUP OF THE ACFT WAITING TO COME IN. I LATER BECAME AWARE THAT DFW HAD CALLED THE ARPT OPS TO CHK UP ON ME. THERE ARE 5 FLTS OF STAIRS FROM THE TWR CAB TO THE RESTROOMS WITH A COMBINATION LOCKED DOOR ENTERING THE CAB. IN ADDITION; THE TWR IS A SECURED AREA WITH 3 COMBINATION LOCKED DOORS AT THE BASE BUILDING. IF I HAD MET WITH AN ACCIDENT AND I NEEDED MEDICAL ATTN; IT WOULD HAVE BEEN SEVERAL HRS BEFORE ANY HELP COULD GET TO ME. WITH A 2 PERSON MIDSHIFT THE EXTRA PERSON COULD PHONE FOR HELP AND ALLOW THEM ENTRANCE INTO OUR SECURITY DOORS WITH VERY LITTLE EFFORT; AND ALL THE WHILE; THE SAFETY AND SVC TO THE ACFT WOULD NOT BE SACRIFICED. THE SAFETY ISSUE WITH 1 PERSON MIDSHIFTS TO BOTH THE ACFT AND CTLR IS ALARMING. I WANT TO GO ON RECORD THAT I AM AGAINST SAVING A PENNY AND LOSING A DOLLAR.