I had a 3yr old dd & a 6month old boy when I went back to work [well not work, uni, but I still needed a c/minder for the first time ever]
DD had just started playgroup 5 mornings a week & I already knew all the staff etc so I decided that dd could stay for their afternoon club also, on the 2 days I had uni.
I looked for a c/minder for ds & found a woman who was v.nice on phone, had great references etc... I went to visit her house & she was outside bleaching her steps... made us enter by the bak door.
When we were in the house she kept telling ds what he could & couldn't touch. She also told him which toys she was allowed to use, but only if her existing mindee, a little boy, wasn't playing with them. [bear in mind ds was only 6 months & only crawling!] Anyway this woman showed me references from lots of people... but it worried me that the little boy [3] was glued to the telly the whole time we were in.
I thanked her for her time & said I would think about it. She called me that evening & really pressurised me. Told me I needed to buy a travel cot as she hadn't got one, said I would have to pay her for dd also incase she needed picked up due to illness [I only wanted her to mind ds, nothing to do with dd!]
Anyway, I had a really bad feeling about her but couldn't put my finger on it.
I looked about & asked around & got in touch with another childminder who had just had a mindee go off to school & was looking a part time child. My ds fitted perfectly & when I called to ask when was convenient to visit, she really made me warm to her by saying "Sure come up now, no time like the present!" I was at her house 20 minutes later drinking coffee whilst she played with ds & I chatted to her other mindees.
Ds has been with her almost 3 years now! She is fantastic! I found out that the other lady stopped childminding as she was only keeping kids for about 5 months at a time before getting bored & giving the parents notice for silly things.
But if you can, spend some time with the childminder & ds before you go off to work.. it may ease your mind a little. My c/minder texts me most days just to say what he's doing!