If your EAD has expired in jun 24 2018 and you still have that, it is also extended till Match 2020 automatically. All you need to show your employer for work is the expired EAD and the federal notice from
https://www.federalregister.gov/documents/2019/05/10/2019-09635/continuation-of-documentation-for-beneficiaries-of-temporary-protected-status-designations-for-nepal



Lookinto the link below and extend EAD extension part.
https://www.uscis.gov/humanitarian/temporary-protected-status/temporary-protected-status-designated-country-nepal