i was terminated without cause , and they are only offering me 4 weeks , i have been there 5 yrs and i am 49 yrs old and work as an IT professional

Four weeks sounds light. However, we would need further particulars regarding your employment in order to do a proper assessment of your entitlements including whether you have an employment contract which specifies your termination entitlements. I would recommend that you contact our office for a free consultation with one of our lawyers prior to signing anything.