Q. I am a U.S. citizen by birth and retired under CSRS in about 2006 after 27 years at the EPA. Since then, I have consulted part time via contracts with Environment Canada and Health Canada. Now Health Canada has asked if I would like to work there temporarily (not to exceed 90 days a year) as a staff member about one day per week. (It’s not clear whether Health Canada’s policies would allow it.) Does this affect my government pension?