Workers at Canada Post went on strike Friday in a move that is expected to create delays and other disruptions to mail and parcel delivery 鈥� just as the Crown corporation prepares for what鈥檚 typically its busiest period.

The Canadian Union of Postal Workers says it came to the decision after 鈥渁 year of bargaining with little progress.鈥� Meanwhile, Canada Post says it鈥檚 鈥渄isappointed鈥� with the decision, which will 鈥渉ave a significant and immediate impact on millions of Canadians, small businesses and charities who count on Canada Post during the busy holiday season.鈥�

Here鈥檚 what you need to know:

How long will my mail take to arrive?

Customers should expect delays in mail and parcel delivery.

鈥淢ail and parcels will not be processed or delivered for the duration of the national strike, and some post offices will be closed. Service guarantees will be impacted for items already in the postal network,鈥� Canada Post spokesperson Lisa Liu said in a statement Friday morning.

鈥淗owever, a national strike of any length will impact service to Canadians well after the strike activity ends. Processing and delivery may take some time to fully return to normal.鈥�

Once operations resume, Canada Post said, all mail will be delivered as quickly as possible on a first-in, first-out basis.

Can I still send mail during the strike?

Canada Post says no new items will be accepted until the national disruption is over.

As the busy holiday season gets underway, Jim Bookbinder, a management sciences professor at the University of Waterloo, says if it鈥檚 an important piece of mail such as a Christmas gift, sending the item via an alternative courier service could be worth considering.

I ordered from a small business. Will I get it on time?

For small businesses, using courier services other than Canada Post could bring more certainty in getting their items to customers but it will be more expensive.

Bookbinder said retailers who are mailing parcels will likely pay 30 to 40 per cent more on shipping if they consider alternatives such as FedEx or UPS.

Customers might be holding back from shopping online with small businesses, fearing it won鈥檛 arrive on time for the holidays, Corinne Pohlmann, executive vice-president of advocacy at the Canadian Federation of Independent Business, said in a statement leading up to the strike. But, she said not to let the Canada Post strike sway you.

鈥淢ost small businesses are very resilient and pretty innovative and they will find ways to get you any products that you need, whether it be delivering it themselves,鈥� she said.

鈥淲e see a lot of small businesses do that or using alternative couriers to get you what you need.鈥�

Will I still receive my social assistance cheques from the government?

Canada Post and the union have agreed to continue delivering government benefit cheques, such as the Canada Child Benefit, old age security and the Canada Pension Plan, during the labour disruption. It said seniors and others who rely on the mail service will receive timely financial assistance.

All cheques for November are set to be delivered on Nov. 20.

Service Canada has urged Canadians to set up online accounts and direct deposits to receive their benefits without delays.

I鈥檓 waiting for my new passport to arrive in the mail. What happens now?

Canada Post said in an email all mail, including passports, will be sent out on a first-in, first-out basis when operations resume.

Service Canada said anyone who has applied for a new passport and chose to receive it by mail should expect delays. Those who need a passport urgently should contact the Passport Program or visit a Service Canada Centre to have their passport application transferred to one of the 60 passport offices that offer pick-up service.

What about bank statements?

Several Canadian banks are urging customers to switch to online statements and e-banking to stay on top of their statements, bills andother banking communications.

For example, CIBC said customers are required to make regular payments and meet financial obligations on credit cards, loans and mortgages even if the postal disruption happens. Other banks, including Bank of Montreal and Scotiabank have issued similar statements.