Belgium has taken new measures to ensure continuity of residence and employment rights of British citizens assuming that the UK may leave the European Union without any agreement on 30 March 2019. The Belgian Ministerial Council approved the draft text on Friday 18 January but it is not yet final.
British people already resident in Belgium will be treated as if they continued to be EU citizens until 30 December 2020. No further action required on their part for the time being. This right of residence also enables British people to work in Belgium until 30 December 2020 without needing a work permit. Belgium will continue to apply the European rules relating to social security. This means that British citizens will continue to build up social security rights until 31 December 2020.
The fact that the UK and the European Union may or may not reach an agreement will have little impact for British people who live and work in Belgium already.
Source: SD Worx