Is there anything that can be done regarding my employer not posting a schedule, therefore not leaving adequate time for me to find child care?

The schedule is supposed to come out every Thursday and should be posted for 2 weeks in advance. The manager rarely puts out a schedule, instead insisting that the employees call the day of to find out if they''re being "scheduled" to work. I have a toddler that is 18 months old and finding a sitter at such short notice (anywhere from 1 hour to 4 hours notice) is almost impossible. I''ve had to miss out on several days of work already in the short 2 months that I''ve worked for this company. I even quit once (was asked to come back and promised that things would be different) and when they didn''t change I quit again (on Wednesday 6/13/12). So now I don''t have a job because he never put out the schedule and I could never find child care. I''m worried about losing my house because my husband doesn''t make enough to cover all our bills and mortgage.