Any day you wear a sash and tiara to work isn’t exactly a regular workday — but it’s not every day someone marks 50 years of employment with the same company. On Tuesday, family, friends and co-workers both past and present came to the Canadian Tire in Sydney, N.S., to celebrate Martha MacIsaac’s half-century working there. “I started in 1976,” said MacIsaac, noting her first shifts were on the store’s cash register.