Age limits for expats in Tunisia

Anybody can provide me with some info about the maximum age at which an expat can obtain the employment permit in Tunisia?

Tunisians must quit work at age 60.  Non-Tunisian corporations should, by law, NOT comply with this Tunisian law unless it applies to Tunisians within their company.  I worked for a British-based language company in Tunis, ostensibly age-blind, but which nonetheless broke my contract when it management saw my age approach 60.  They got away with it. The takeaway: forewarned is forearmed. Make sure you work for an ethical company with a track record to prove it.