Management gets concerned when colleagues no longer report about work. This is when manager will go to the staff to understand about work progress. Can be mitigated by just telling manager that more time is needed, rather than keeping quiet.
There are some classified government projects, where leaking will result in management coming to find out what is leaked.
Different sites: Woodlands is very difficult to reach by public transport. Jurong/Aljunied/alexander sites reachable but can be confusing which site to go.
This is not the place for people that have difficulty reporting work progress. Fast or slow progress is fine. If you are fast, company let you go early. If you are slow and miss deadline, management will ask why you didn't report.
Very high tolerance managers, new comers will sometimes bully them.