Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 2.45; Flight Crew Total 9114.88; Flight Crew Type 4493.80
Communication Breakdown
Deviation / Discrepancy - Procedural Landing Without Clearance
I had been off from flying since [Month] due to the Covid19 slowdown and my leave over the summer. This was my OE after completing training to get me refreshed and up to speed with line flying. I was definitely a currency and recency of experience threat that was discussed in the cockpit and prior to the top of descent going into ZZZ. After being cleared for the ILS approach to XXR; we were using VNAV and either LOC or LNAV to track the approach course to the runway. There was a lot of haze and smoke from the fires in the area that was obscuring our ability to see the runway.  We flew the approach and eventually selected APPR mode on the MCP with approx 5 miles until touch down. Approach told us to contact tower around the Final Approach Fix. I was almost exclusively focused on flying and failed to cross-check the Captain to make sure he contacted Tower for our landing clearance. Even at the 1;000 foot call; I thought we were most likely cleared to land; and I was so focused flying that I didn't suggest the Captain query ATC. Poor workload management on my behalf. I felt very compressed as the work load increased. I flew a stabilized SOP ILS approach and landed uneventfully on XXR. Upon contacting Ground Control we realized that Tower was never contacted and clearance to land was never received. Ground Control made no mention of this failure and cleared us to our gate.
Air carrier First Officer reported that the crew landed without a clearance after forgetting to contact Tower. The First Officer cited poor workload management and lack of recent flying as contributing factors.