Is it permissible to work before the Eid prayer?
Yes, it is permissible to work before or after the Eid prayer. However, it is better not to as Eid is a day of rejoicing and thus it should be distinguished from other days. It is mustahab to not engage in any worldly action other than what is related to Eid before the Eid prayer, unless there is a necessity.
And Allah ﷻ knows the best
Imam Ahmad Rida Khan رحمة الله تعالى عليه
Translation by Dr Musharraf Hussain Al-Azhari Translator of Majestic Quran, www.majesticquran.co.uk