O'Fallon-Shiloh Chamber of Commerce: Executive Board meeting from 7:30 to 8:30 a.m.

Tuesday

Edwardsville-Glen Carbon Chamber of Commerce: 2012 Professional Education Series @ Hampton Inn in Glen Carbon from 8 to 10:30 a.m.

O'Fallon-Shiloh Chamber of Commerce: Business After Hours @ Tamarack Country Club in Shiloh from 5 to 7 p.m.

Wednesday

Greater Belleville Chamber of Commerce: Issues & Eggs Breakfast @ Bellecourt Manor in Belleville @ 7:30 a.m.

O'Fallon-Shiloh Chamber of Commerce: Board of Directors meeting from 7:30 to 8:30 a.m.

Maryville-Troy-St. Jacob Chamber of Commerce: Midwest Business Institute conference @ The Regency Conference Center in O'Fallon from 8 a.m. to 4:30 p.m.

O'Fallon-Shiloh Chamber of Commerce: Ribbon Cutting @ Melaleuca The Wellness Co. in O'Fallon from 11:30 a.m. to noon

Friday

O'Fallon-Shiloh Chamber of Commerce: Business Over Breakfast @ Public Safety Building in O'Fallon from 7:30 to 8:40 a.m.