I further undertake not to be engaged in any form of employment, business or occupation whilst in Singapore without the written consent of the Controller of Immigration.

我还保证如果没有移民管理部分的书面批准，不会以任何形式在新加坡的任何公司工作。

youdao

Singapore visa is not an immigration pass.

我大概翻译一下： 新加坡签证不是入境许可。

youdao

Criticism of Singapore's immigration policy has become more vocal recently, with many locals blaming it for a rise in property prices and living costs.

BBC: Singapore budget focuses on foreign workers

While a plunging birth rate has widely documented effects on a nation's economic growth, tax revenues, healthcare costs and immigration policies, Singapore's example is also having some unexpected consequences.

BBC: Singapore uses rap to try to boost birth rate

Singapore agreed to disagree with Malaysia over immigration checkpoints, military exercises, water - and history.

CNN: The 'Big Story' and Other Big Ones