I disagree with the whole thing being purely seperation anxiety. Could it be? Absolutely, but don't assume it automatically is. I agree with the fact it is more attention and wanting to be with mom. My daughter is almost 15 months now and she recently has started this phase too. The reason I disagree with the seperation anxiety is because, like you, I am a full-time 40 hour a week employee. I drop her off at home daycare while I work an hour away, every day. Every day I drop her off, she waves bye and blows kisses, runs off to play and is happy as can be. When I pick her up, she immediately clings to me, wants to be picked up and held, and starts whining (and I hate whining). The sitter tells me she's great, she only does it when I come home. So this tells me it is probably due to the fact she misses me. If it were seperation anxiety, she'd scream when I leave her there in the morning.
If you work, chances are you've been dropping her off and the seperation anxiety should have already passed when she was around 9-12 months. I am not an expert, but my daughter has been in daycare since 3 months old and she is accustomed to it now and sounds like your situation is very similar.
What I try to do is include her in the things I do. I bought her a vaccum, a broom, a shovel, and I moved things around in my cupboards so she can do dishes with me and put them away. I give her bowls filled with water and a spoon so she can cook when I cook. We brush our teeth together.
I only have one child, so my situation is different. However, I believe your daughter is seeking more attention right now because she misses you. Eventually she will understand why you leave and that you do come back. For the moment though, cater to her needs, but keep a line drawn. There is no such thing as spoiling a child with attention or love. Anyone who says otherwise is probably just a cold hearted person who shouldn't have kids anyway.
Try watching a video with her at night before she goes to bed. My daughter and I watch Barney every single night with her in my lap and when it gets time to sing the "I Love You" song, I sing it gently to her in her ear and we give each other a big hug and a big kiss and she knows it's time for bed.
One other thing, I also agree with the other mom who says stop worrying about the house. Children come first. Forget the house and the cleaning. I stay up until 11pm or later every night cleaning and I'm exhausted. But it's a sacrifice I don't mind in order to make sure my child never feels like work, housecleaning, or anything along these lines is more important to me than she is. My boyfriend has a choice to either wait for dinner after she goes to bed, or make it himself. This phase will pass. Don't worry, enjoy these times cuddling because they don't last long and soon you'll be wishing to have them back.
Good Luck!
J.