Pick, Pack and Ship Times: Setting Fulfillment SLAs With a 3PL

When I negotiated my first fulfillment agreement, I made the mistake of accepting an SLA that just said orders ship within 24 hours. It sounded fine until a customer asked when their order actually left the building and I had no idea what to tell them.

Now I define the clock before I sign anything. Four timestamps matter to me: when the order lands in the 3PL’s system, when a picker starts it, when packing is done, and when a carrier scan confirms it’s moving. Everything between those points is what I’m actually paying for.

Pick time is the one I watch closest. If the clock starts at order receipt and stops when the item is in hand, a slow pick usually means a stock problem, not a labor problem. I ask for that gap separately so I can tell which one it is.

Pack time covers the bench work: labeling, inserts, box choice. Small differences here add up across hundreds of orders, so I keep it measured even when it feels minor.

Ship confirmation is where people get sloppy. A printed label is not a shipped order. I want the timestamp tied to a carrier scan, and I want the definition written into the agreement so we’re not arguing about it later.

Then I ask to see the dashboard before I commit. I want to know which fields update live, which refresh nightly, and who owns the numbers when they disagree. If I can’t pull a week of history myself, the SLA is a story, not a measurement.

A simple way to start:

• Write down your cutoff time in the 3PL’s local time zone
• Separate pick, pack, and carrier scan into distinct metrics
• Agree on what counts as “shipped”
• Set a review cadence, weekly at first

Example: say an order comes in at 9 a.m. and the carrier scan shows 6 p.m. the next day. That tells a different story than a generic 24 hour claim.

I also build in a short ramp period, maybe the first month, where I watch rather than enforce. It gives both sides a baseline. Before I sign, I use review warehouse options to compare how different facilities report these timestamps, because the definitions vary more than the marketing suggests. Always confirm the specific terms in the provider’s current agreement.

— Mike Carter