hi, i have had a month off work due to stress, dr told me 2 wks ago my hba1 c was too high, and thats why i have been feeling ****. been suffering from headaches, sickness ect. sighned me off for another 2 wks and put on the sick note, stress/diabetes. had a letter this morning from my employer wanting me to attend there Occupational Health Clinic. other people at work have been off longer than me, and they havent had to attend? has this happend to anyone else?