If you wish to apply for equal status with Danish citizens according to the EU-law, you must be an EU, EEA or Swiss citizen, and you have had a minimum of 10-12 hours’ work a week. http://www.su.dk/English/Sider/eulaw_workedindk.aspx
You can apply for equal status with Danish citizens if you work or have worked in Denmark for a minimum of 2 years, and have had at least 30 hours’ paid work a week must be registered http://www.su.dk/English/Sider/danishrules_workedindk.aspx