Do I need to start looking for a new job?

We have a lot of signs that we may be closing but no official word yet. Here are some of the signs: The people who have quit have not been replaced. Conference calls with our area managers about our low sales at least once a week, when last year we only heard from them once a month. High shrinkage results at... show more We have a lot of signs that we may be closing but no official word yet. Here are some of the signs:
The people who have quit have not been replaced.
Conference calls with our area managers about our low sales at least once a week, when last year we only heard from them once a month.
High shrinkage results at our physical inventory that took place in August/07.
Sales are lower than last year's sales but not by a whole lot.

At our conference calls, our area managers always say positive things and makes it sound like we're not closing. Is this just a technique they're using to make us stay and not start looking for new jobs??? I'm very concerned and want to know from a legal standpoint, how many days or months in advance must they inform us of a store closing. Our office only has 5 people working here. Any ideas?
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