My boss legit says that he will give me some time to work on it every 2-3 months and then drops a “customer requires X feature and I promised that we will deliver in one week”. And mind you we have to patch up to 3 major versions in the past to back port the new feature because client haven’t upgraded and won’t in near future… which means sometimes our major releases are 60-70% same as our minor patches for old versions. Semvering much?
Even if they fire him, his code still exists and is still legally theirs.