Prior job required full availability and didn't promise many hours. Some weeks I only got 10 hours and I was unable to make ends meet with that. I regretted leaving the company I enjoyed working for but I am a hard worker and require as many hours as the company can spare for me. Ikea guarantees 12-19 hours for part time, you can also tie this question with you being available to pick up shifts in short notice because they get many callouts during weekends and you can pick up hours.