A foreigner can work in Singapore for a short time without a work pass. However, this only applies for certain activities, and they must still notify Ministry of Manpower (MOM) when they arrive.

S/nType of Activity
1Arbitration or Mediation Services
2Exhibitions
3Journalism
4Junket Activities
5Location Filming and Fashion Shows
6Performances
7Specialised Services related to a New Plant / Operations / Equipment
8Seminars and Conferences
9Sports
10Tour Facilitation
11Judicial / Legal duties in Singapore International Commercial Court

More information can be found on the MOM website: www.mom.gov.sg/passes-and-permits/work-pass-exempt-activities/eligible-activities