2 TRACON RADAR CTLRS ALLEGE THAT A SUPVR CTLR WORKING THE JFK FINAL POS HAD FROM 3-5 LOSSES OF SEPARATION BTWN ACFT BEING VECTORED TO JFK. NONE OF THE ACFT EVER GOT LESS THAN 3 MI; BUT THEIR COMPLAINT WAS THAT HE WAS NOT APPLYING PROPER WAKE TURB SEPARATION OR SPACING OF A 'CLASSES' OF ACFT PER THE ATC PROC HANDBOOK. ONE RPTR; WHEN QUESTIONED BY MGMNT; DENIED SEEING THIS OCCUR AND SAYS HE WAS HARASSED BY MGMNT.

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ON 3 OCCURRENCES I WITNESSED A SUPVR LOSE HORIZ SEPARATION (IN TRAIL) WHILE WORKING THE JFK AREA FINAL APCH POS. I WAS WORKING THE DEP POS; 2 RADAR SCOPES AWAY. THE FIRST OCCURRENCE I NOTICED WAS THAT SAID SUPVR HAD LESS THAN 6 MI WITH A BA41 FOLLOWING A B767 HVY JET. SECOND OCCURRENCE WAS WHEN HE HAD LESS THAN 5 MI WITH A B757 FOLLOWING A B767 HVY JET. THE THIRD OCCURRENCE WAS WHEN HE HAD LESS THAN 4 MI BTWN A B767 AND AN EA30 HVY. NEITHER OF THESE LOSSES OF SEPARATION WERE RPTED. THIS SAME SUPVR REQUIRES THAT WE STRICTLY ADHERE TO THE MINIMUM SEPARATION STANDARDS; WHICH WE DO -- YET HE IS COMPELLED TO IGNORE HIS OWN ERRORS. SUPPLEMENTAL INFO FROM ACN 361142: ON FRIDAY; A SUPVR HAD AT LEAST 5 OPERRORS WHILE WORKING THE FINAL RADAR POS IN THE KENNEDY AREA OF THE NY TRACON. I WAS ON DUTY DURING THIS TIME AND WITNESSED THESE ERRORS. ON THURSDAY; MGMNT PERSONNEL INTERROGATED ME AS TO MY KNOWLEDGE OF THESE INCIDENTS. THEY ASKED ME IF I KNEW OF THESE ERRORS AND WHETHER I MADE ENTRIES ON MY KEY PACK TO MEASURE DISTANCES BTWN 2 CERTAIN ACFT. I DENIED ANY KNOWLEDGE OF OPERRORS AND DENIED MAKING SUCH ENTRIES ON MY KEY PACK. I BELIEVE MGMNT HARASSED ME AND OTHER CTLRS AT MY FACILITY.