National Business

OTTAWA — An increase in the cost to send a letter in Canada took effect Monday. The cost of stamps purchased in a booklet, coil or pane is now 99 cents per stamp, an increase of seven cents. The price of a single domestic stamp is now $1.

CALGARY — Ensign Energy Services Inc. reported a loss in its latest quarter compared with a profit a year earlier as its revenue fell 11 per cent. The oilfield services company says its net loss attributed to common shareholders amounted to $1.

TORONTO — When talent search platform Plum noticed ChatGPT sending ripples through the tech world and beyond, it decided to turn right to the source to lay out how staff could and couldn't use the generative artificial intelligence chatbot.

TORONTO — Hundreds of Nestle workers walked off the job in Toronto on Sunday after rejecting a tentative agreement the union reached with the chocolate maker.

TEL AVIV, Israel (AP) — Israel ordered the local offices of Qatar's Al Jazeera satellite news network to close Sunday, escalating a long-running feud between the broadcaster and Prime Minister Benjamin Netanyahu's hard-line government as Doha-mediate

TORONTO — Five things to watch for in the Canadian business world in the coming week: Suncor earnings Suncor Energy Inc.

At least once a day, Digvijay Kosamia glances at his vibrating cellphone to check the latest text he's received, only to find a "frustrating" message from an unknown number.

London Drugs says it is gradually reopening its stores following a cybersecurity incident that shuttered its more than 80 locations across Alberta, Saskatchewan, Manitoba and B.C. The Richmond, B.C.

CALGARY — WestJet has issued a 72-hour lockout notice to the union representing its mechanics, and warns a work stoppage could happen as early as Tuesday.

OTTAWA — The Canadian government is expanding its surveillance program for a form of avian flu amid a growing outbreak in U.S. dairy cattle. Fragments of highly pathogenic avian influenza have been detected in pasteurized milk sold in the U.S.